Delhi Police Constable (Executive) (Held On: 29 Dec, 2025 Shift 3) (Previous Year Paper)

The correct answer is Sidhu Murmu.

Key Points

• Sidhu Murmu, along with his brother Kanhu Murmu, spearheaded the Santhal Rebellion, also known as the Santhal Hul, which broke out in June 1855.
• The rebellion was centered in the Damin-i-koh region, which encompasses parts of modern-day Jharkhand (specifically Sahebganj and Dumka), Bihar, and West Bengal.
• The uprising was a direct response to the exploitation by the British East India Company, oppressive Zamindars (landlords), and corrupt Mahajans (moneylenders) who seized tribal lands through debt traps.
• On June 30, 1855, nearly 60,000 Santhals gathered at Bhagnadihi and declared a revolt to establish an independent Santhal Raj.
• The bravery of Sidhu Murmu and the intensity of the revolt eventually compelled the British to pass the Santhal Parganas Tenancy Act of 1876, providing some protection to tribal land rights.

 Additional Information

• Tantia Tope
• He was a brilliant general during the Revolt of 1857, known for his guerrilla warfare tactics in Central India.
• He was a close associate of Nana Saheb and fought valiantly to recapture Kanpur and Gwalior from the British.
• Birsa Munda
• He was a folk hero and tribal leader who led the Munda Rebellion (Ulgulan or the Great Tumult) between 1899 and 1900 in the Chotanagpur plateau.
• He founded the Birsait faith and aimed to establish a Munda Raj free from British interference and Christian missionary influence.
• Mangal Pandey
• A sepoy of the 34th Bengal Native Infantry, he is credited with igniting the Indian Rebellion of 1857 at Barrackpore.
• His refusal to use the greased cartridges and his attack on British officers made him a symbol of early Indian resistance.

The correct answer is Yakshagana.

Key Points

• Yakshagana is a traditional dance-drama theatre form native to the state of Karnataka, specifically flourishing in the coastal districts of Dakshina Kannada, Udupi, and Uttara Kannada.
• The performance is deeply rooted in Vaisnava bhakti and depicts stories primarily from the Ramayana, Mahabharata, and Bhagavata Purana.
• It is a composite art form that integrates music (Himmela), dance, dialogue (Arthadhari), and elaborate costumes (Veshadhari).
• The troupe is led by the Bhagavatha, the lead singer and director who provides the narrative framework and engages in a dialogue with the actors.
• Characterized by its unique musical style, it utilizes traditional instruments like the Maddale (hand drum), Chande (loud drums), and Tala (cymbals).
• The actors wear highly stylized costumes, heavy face paint, and magnificent headgears known as Kiritas, which are designed to reflect the divinity or demonic nature of the characters.

 Additional Information

• Kuchipudi:
• This is a classical dance-drama from Andhra Pradesh, named after the village Kuchelapuram.
• It involves both singing and dancing by the performers and often features the Tarangam, where dancers perform on the edge of a brass plate.
• Mohiniyattam:
• A classical dance form from Kerala, traditionally performed by women.
• The name derives from Mohini, the mythical enchantress avatar of Lord Vishnu, focusing on Lasya (graceful movements).
• Garba:
• A vibrant folk dance originating from Gujarat.
• It is performed in a circular motion around a lamp or a statue of Goddess Durga during the Navratri festival.

The correct answer is Nagaland.

Key Points

• The Hornbill Festival is the most significant cultural event in Nagaland, held annually from December 1 to December 10.
• It is widely referred to as the Festival of Festivals because it provides a unified platform for the 17 major tribes of the state to exhibit their distinct traditions, music, and arts.
• The festival was first established in the year 2000 by the Government of Nagaland to promote tourism and preserve the unique heritage of the Naga people.
• The celebration is primarily hosted at the Naga Heritage Village in Kisama, located about 12 kilometers from the state capital, Kohima.
• It is named after the Great Indian Hornbill, a bird species that is deeply revered and featured prominently in the folklore and traditional songs of the local tribes.
• The event coincides with Nagaland Statehood Day, which marks the official formation of the state on December 1, 1963.

 Additional Information

• Arunachal Pradesh:
• Hosts the Pakke Paga Hornbill Festival, which focuses on the conservation of hornbills, and the Losar festival, which marks the Monpa New Year.
• Manipur:
• Celebrates the Sangai Festival every November, named after the rare Sangai (brow-antlered deer) found only in the Keibul Lamjao National Park.
• Mizoram:
• Known for Chapchar Kut, a spring festival celebrated after the completion of Jhum (slash and burn) cultivation activities.
• Naga Culture:
• Participating tribes include the Angami, Ao, Konyak, Lotha, and Sumi, each presenting their specific Morungs (traditional communal huts) and war dances.

The correct answer is Sekrenyi.

Key Points

• The Sekrenyi festival is the premier annual celebration of the Angami Naga tribe, typically held in the month of February (known locally as Kezei) for a duration of ten days.
• It is famously known as the Phousanyi or the purification festival, which focuses on the ritualistic cleansing of the body and soul to attain a sanctified life.
• The primary objective of the festival is to invoke divine prosperity and ward off evil spirits to ensure a successful and bountiful sowing season.
• A significant ritual involves the Kizie ceremony, where drops of rice water are placed on the house pillars to purify the dwelling, followed by a ceremonial bath taken by the men at the village well.
• The festival is marked by traditional songs, folk dances, and feasting, where the youth of the village engage in social bonding and community building.

 Additional Information

• Moatsu:
• It is a premier festival of the Ao tribe, celebrated in early May.
• The festival marks the completion of the sowing period and is characterized by prayers for a good harvest and community bonding.
• Tuluni:
• This is the most important festival of the Sumi Naga tribe, observed in July.
• It is a festival of plenty and harvest, involving rituals to appease the deities for the protection of crops.
• Hornbill:
• Known as the Festival of Festivals, it is an annual event organized by the State Tourism and Art & Culture Departments of Nagaland.
• Held from 1st to 10th December at Kisama Heritage Village, it showcases the collective cultural heritage of all Naga tribes.

The correct answer is Chimamanda Ngozi Adichie.

Key Points

• Chimamanda Ngozi Adichie is a renowned Nigerian author who published the critically acclaimed novel Half of a Yellow Sun in 2006.
• The novel is set during the Nigerian Civil War (also known as the Biafran War), which took place between 1967 and 1970.
• The narrative follows the lives of five primary characters, including twin sisters Olanna and Kainene, and explores the profound impact of the war on their relationships, social status, and survival.
• The title of the book, Half of a Yellow Sun, is derived from the emblem on the national flag of the short-lived Republic of Biafra.
• The novel was awarded the prestigious Orange Prize for Fiction (now the Women’s Prize for Fiction) in 2007 for its haunting portrayal of post-colonial history.

 Additional Information

• Chinua Achebe:
• Often regarded as the father of modern African literature, he is best known for Things Fall Apart.
• He wrote a non-fiction memoir titled There Was a Country, which also provides a personal account of the Biafran War.
• Wole Soyinka:
• He was the first sub-Saharan African to receive the Nobel Prize in Literature in 1986.
• His works often focus on Nigerian politics and traditional Yoruba culture, such as Death and the King’s Horseman.
• Ngugi wa Thiong'o:
• A prominent Kenyan writer and academic known for his advocacy of writing in indigenous African languages.
• His famous works include A Grain of Wheat and Petals of Blood, which focus on the colonial and post-independence struggles of Kenya.

The correct answer is Pulakeshin II.

Key Points

• Harshavardhana, the prominent ruler of the Pushyabhuti Dynasty (Vardhana Empire) of Kannauj, attempted to expand his kingdom into the southern peninsula in the early 7th century.
• His southward march was halted on the banks of the Narmada River by the Chalukya king Pulakeshin II, who ruled from Vatapi (modern Badami).
• The battle, which took place around 618–619 CE, resulted in a decisive victory for the Chalukyas and established the Narmada River as the permanent boundary between the two great empires.
• Primary historical evidence for this conflict comes from the Aihole Inscription of 634 CE, which was composed by Pulakeshin II court poet, Ravikirti.
• The inscription famously notes that through his defeat, Harsha (which means joy) lost his 'harsha' (happiness) due to the fear of the Chalukyan monarch.
• The Chinese pilgrim Xuanzang (Hiuen Tsang), who visited the courts of both kings, also confirmed that Harshavardhana was unable to conquer the kingdom of Pulakeshin II despite his massive army.

 Additional Information

• Pulakeshin I:
• He was the real founder of the Chalukya Dynasty of Vatapi and performed the Ashvamedha (horse sacrifice) to assert his sovereign power.
• Mahendravarman I:
• A famous Pallava king who was a contemporary of Pulakeshin II; he was defeated by the Chalukyas in the early stages of the Chalukya-Pallava conflict.
• He is credited with the development of the Mahendra style of rock-cut temple architecture.
• Narasimhavarman I:
• The successor of Mahendravarman I, also known as Mamalla, who eventually defeated Pulakeshin II in 642 CE and sacked the city of Vatapi.
• Following his victory, he assumed the title of Vatapikonda (Conqueror of Vatapi).

The correct answer is Tolkappiyar.

Key Points

• The Tolkappiyam is the most ancient extant work of Tamil literature and serves as a comprehensive treatise on grammar, linguistics, and poetics.
• It was authored by Tolkappiyar, who is traditionally identified as one of the twelve disciples of the legendary sage Agattiyar (Agastya).
• The text is meticulously structured into three major sections known as Adhikaram: Eluttatikaram (dealing with phonology and orthography), Collatikaram (focusing on morphology and syntax), and Porulatikaram (describing the socio-cultural life and poetic conventions).
• It is widely considered to belong to the Second Sangam (Idai Sangam) period and provides the foundational rules for the Classical Tamil language.
• The Porulatikaram section is particularly significant for historians as it classifies human emotions and landscape types (Ainam) like Kurinji, Mullai, Marutham, Neithal, and Paalai.

 Additional Information

• Agattiyar:
• Commonly referred to as the father of Tamil literature and the pioneer of the First Sangam (Muthal Sangam).
• He is credited with the first known Tamil grammar, Agattiyam, although this work is largely lost to history.
• Ilango Adigal:
• A prince-turned-monk who authored Silappathikaram, the first and most famous of the Five Great Epics of Tamil literature.
• The work highlights the concept of Pattini Cult or the worship of Kannagi as the ideal chaste wife.
• Tiruvalluvar:
• A renowned philosopher-poet who composed the Tirukkural, a seminal work consisting of 1330 couplets.
• The text is organized into three parts: Aram (Virtue), Porul (Wealth/Politics), and Inbam (Love), serving as a universal guide to ethics.

The correct answer is Sutlej.

Key Points

• The Bhakra-Nangal Dam is a major multi-purpose river valley project constructed across the Sutlej River in northern India, primarily serving the states of Punjab, Haryana, and Rajasthan.
• It consists of two separate structures: the Bhakra Dam, which is a concrete gravity dam located in Himachal Pradesh, and the Nangal Dam, situated downstream in Punjab.
• Standing at a height of approximately 226 meters, the Bhakra Dam is one of the highest gravity dams in the world and forms the Gobind Sagar Lake reservoir.
• The project was officially dedicated to the nation in 1963 by India’s first Prime Minister, Jawaharlal Nehru, who famously described such infrastructure projects as the temples of modern India.
• The primary objectives of the dam include providing a reliable source of irrigation for millions of hectares of agricultural land and generating hydroelectric power to support regional industrialization.
• The Sutlej River, on which the dam is built, is the longest of the five rivers of the Punjab region and originates from Lake Rakshastal in Tibet.

 Additional Information

• Ganga:
• It is the most sacred and longest river in India, originating from the Gangotri Glacier at Gaumukh in Uttarakhand.
• Major dams on this river system include the Tehri Dam (on the Bhagirathi tributary) and the Farakka Barrage.
• Yamuna:
• As the longest tributary of the Ganga, it originates from the Yamunotri Glacier in the Mussoorie range of the Lower Himalayas.
• The river flows through the national capital, Delhi, and cities like Agra before its confluence at Prayagraj.
• Brahmaputra:
• Known as the Yarlung Tsangpo in Tibet, it enters India through Arunachal Pradesh and flows through the Assam valley.
• It is characterized by high discharge and is responsible for creating the world’s largest inhabited river island, Majuli.

The correct answer is It can be filed in any police station, regardless of the crime's location.

Key Points

• The Bharatiya Nagarik Suraksha Samhita (BNSS), 2023, which replaced the colonial-era Code of Criminal Procedure (CrPC), has officially integrated the provision of Zero FIR under Section 173.
• A Zero FIR enables a victim or a complainant to register a First Information Report at any police station across the country, irrespective of where the offense was committed or the jurisdictional boundaries of that station.
• Upon registration, the FIR is assigned the serial number '0' (zero); it is then mandatory for that station to transfer the relevant documents and initial findings to the police station having the actual territorial jurisdiction for further investigation.
• The primary objective of this provision is to ensure the timely initiation of the legal process and to prevent destruction of evidence, which is particularly critical in heinous crimes such as rape, murder, or accidents.
• By mandating the acceptance of complaints regardless of location, the BNSS removes the procedural hurdles and jurisdictional disputes that often discouraged victims from seeking immediate police assistance.

 Additional Information

• Bharatiya Nagarik Suraksha Samhita (BNSS) Context:
• The BNSS received the President's assent on December 25, 2023, and officially replaced the CrPC of 1973 starting from July 1, 2024.
• Before the BNSS, the Zero FIR concept was popularized following the Justice Verma Committee recommendations after the 2012 Nirbhaya Case, though it lacked a specific statutory mention in the original CrPC.
• The new law also introduces technological advancements such as e-FIRs, which can be filed electronically, and mandates forensic examination for crimes carrying a punishment of seven years or more.
• The BNSS aims to provide a citizen-centric criminal justice system, focusing on speedy trials and the rights of victims through mandatory time-bound investigations and prosecutions.

The correct answer is Art 21A.

Key Points

• Article 21A was inserted into the Constitution of India to grant the right to education the status of a Fundamental Right.
• This significant change was introduced via the 86th Constitutional Amendment Act, which was enacted in the year 2002 to ensure free and compulsory education.
• The article mandates that the State shall provide education to all children specifically within the age group of six to fourteen years in a manner determined by law.
• Before this amendment, the provision for education was primarily a Directive Principle under Article 45, which was not legally enforceable in a court of law.
• The Right of Children to Free and Compulsory Education (RTE) Act, 2009, was later passed to provide the legislative framework required to implement the mandate of Article 21A, coming into force on 1 April 2010.

 Additional Information

• Article 51:
• This article is part of the Directive Principles of State Policy (DPSP) in Part IV.
• It directs the State to promote international peace and security, maintain just relations between nations, and foster respect for international law and treaty obligations.
• Article 51A:
• Contained in Part IVA, it enumerates the Fundamental Duties of the citizens of India.
• The 86th Amendment Act, 2002, added a new fundamental duty under Article 51A(k), which requires a parent or guardian to provide opportunities for education to his child or ward between the age of 6 and 14 years.
• Article 21:
• Provides for the Protection of Life and Personal Liberty, stating that no person shall be deprived of these except according to procedure established by law.
• The Supreme Court, in the Unni Krishnan vs. State of Andhra Pradesh (1993) case, ruled that the right to education is a concomitant of the rights guaranteed under Article 21.

The correct answer is 6 months.

Key Points

• According to Article 62(2) of the Indian Constitution, an election to fill a vacancy in the office of the President occurring by reason of death, resignation, removal, or otherwise must be held as soon as possible.
• The Constitution mandates that such an election shall in no case be held later than six months from the date of the occurrence of the vacancy.
• This six-month window ensures that the highest constitutional office of the Republic of India does not remain vacant for an extended period, maintaining the stability of the Union Executive.
• The Election Commission of India is the constitutional body responsible for conducting the presidential election within this stipulated timeframe under the Presidential and Vice-Presidential Elections Act, 1952.
• During this transition, the Vice-President of India acts as the President until a new successor is elected and assumes the charge of the office.
• Therefore, the mandatory deadline to conduct a new election and appoint a new President is six months.

 Additional Information

• Article 56:
• States that the President holds office for a term of five years from the date on which they enter the office.
• A newly elected President filling a vacancy holds the office for the full term of five years, not just for the remainder of the previous President's term.
• Article 65:
• Specifies that the Vice-President shall act as President or discharge his functions during casual vacancies in the office or during the absence of the President.
• In the event that the Vice-President is also unavailable, the Chief Justice of India (or the senior-most judge of the Supreme Court) performs these duties.
• Article 62(1):
• Requires that an election to fill a vacancy caused by the expiration of the term of the President must be completed before the current term expires.

The correct answer is 82degree30'E.

Key Points

• The Standard Meridian of India is a specific longitude used to determine Indian Standard Time (IST), which is the uniform time observed throughout the country.
• India is a vast country with a longitudinal extent ranging from approximately 68°7' E to 97°25' E, covering nearly 30 degrees of longitude.
• As the Earth rotates 360 degrees in 24 hours, each degree of longitude corresponds to a time difference of 4 minutes; thus, there is a time lag of about 2 hours between the easternmost point in Arunachal Pradesh and the westernmost point in Gujarat.
• To avoid logistical confusion and maintain synchronization in transport and communication, the meridian of 82°30' E was selected as the standard, as it passes roughly through the center of the country near Mirzapur in Uttar Pradesh.
• The local time at this meridian is taken as the standard time for the entire nation, ensuring that a single clock time is followed from Kashmir to Kanyakumari and from Saurashtra to Silchar.

 Additional Information

• Geographic Coverage:
• The 82°30' E meridian passes through five Indian states: Uttar Pradesh, Madhya Pradesh, Chhattisgarh, Odisha, and Andhra Pradesh.
• It is located exactly 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT), officially designated as UTC+5:30.
• The Tropic of Cancer (23°30' N) and the Standard Meridian (82°30' E) intersect each other at Koriya district in the state of Chhattisgarh.
• Unlike many large countries like the USA or Russia, which have multiple time zones, India follows a single time zone to simplify national administrative and economic activities.

The correct answer is Anthony John Abbott.

Key Points

• Anthony John Abbott, who served as the 28th Prime Minister of Australia (2013-2015), visited India in February 2025 to further strengthen the India-Australia bilateral partnership.
• During this visit, he toured the NAFED Millet Experience Centre (MEC) located at Dilli Haat, New Delhi, which serves as a specialized hub for promoting the consumption and awareness of millets.
• The visit was designed as an agri-food diplomacy initiative to highlight India's leadership in sustainable agriculture and the nutritional benefits of Shree Anna (millets) to the global community.
• The Millet Experience Centre is a collaborative initiative between the National Agricultural Cooperative Marketing Federation of India (NAFED) and the Ministry of Agriculture and Farmers Welfare to support the International Year of Millets legacy.
• Abbott engaged with various stakeholders to discuss agri-tech collaborations and trade opportunities for ancient grains, aligning with the objectives of the India-Australia Economic Cooperation and Trade Agreement (ECTA).

 Additional Information

• NAFED (National Agricultural Cooperative Marketing Federation of India Ltd):
• It was established on the birthday of Mahatma Gandhi on 2nd October 1958.
• It functions under the Ministry of Agriculture and is the apex organization of marketing cooperatives for agricultural produce in India.
• Its primary objective is to promote cooperative marketing of agricultural produce to ensure farmers get remunerative prices.
• Millet Significance:
• India is the largest producer of millets in the world, accounting for approximately 20 percent of global production.
• Major varieties include Jowar (Sorghum), Bajra (Pearl Millet), and Ragi (Finger Millet).
• Millets are highly climate-resilient, requiring minimal water and being capable of growing in arid and semi-arid regions without heavy chemical fertilizers.
• Other Personalities:
• Scott Morrison, Kevin Rudd, and Malcolm Turnbull are also former Prime Ministers of Australia who have historically played roles in shaping the Quad and Indo-Pacific strategies.

The correct answer is Droupadi Murmu.

Key Points

• The 58th Jnanpith Award ceremony was presided over by the President of India, Droupadi Murmu, in May 2025, where she formally conferred the nation's highest literary honor.
• The award for the year 2023 was jointly presented to two eminent personalities: the legendary Urdu poet and lyricist Gulzar (Sampooran Singh Kalra) and the renowned Sanskrit scholar and spiritual leader Jagadguru Rambhadracharya.
• Gulzar is celebrated for his profound contributions to Urdu literature and Indian cinema, having previously received honors like the Sahitya Akademi Award, Padma Bhushan, and the Dadasaheb Phalke Award.
• Jagadguru Rambhadracharya, a polyglot and founder of Tulsi Peeth, was recognized for his monumental scholarship in Sanskrit, having authored over 100 books despite being lifelong visually impaired.
• The selection was finalized by a high-level committee chaired by noted writer Pratibha Ray, emphasizing excellence in creative writing across Indian languages.

 Additional Information

• Jnanpith Award:
• Established in 1961 by the Bharatiya Jnanpith, it is considered the most prestigious literary prize in India.
• The award carries a cash prize of 11 lakh rupees, a citation plaque, and a bronze replica of Saraswati (Vagdevi).
• The first recipient of this award was G. Sankara Kurup (Malayalam) in 1965.
• Other Personalities:
• Rajnath Singh: He is a senior leader serving as the Union Defence Minister of India.
• Smriti Irani: She has served as a Union Cabinet Minister holding portfolios like Women and Child Development.
• G. Kishan Reddy: He is a Union Minister who has headed the Ministry of Culture and Ministry of Tourism.

The correct answer is 5th.

Key Points

• In the IQAir 2024 global air-quality assessment, which analyzed data from the preceding year, India was ranked as the 5th most polluted country in the world based on its annual average PM_2.5 concentration.
• The report assessed air quality across 134 countries, regions, and territories, utilizing data from over 30,000 air quality monitoring stations operated by governmental bodies, research institutions, and citizen scientists.
• India recorded an average annual PM_2.5 level of approximately 54.4 µg/m³, a figure that is significantly higher than the World Health Organization (WHO) annual air quality guideline of 5 µg/m³.
• The assessment highlighted that nearly 96% of the Indian population lives in areas where air quality levels are at least seven times higher than the WHO standards, primarily due to industrial emissions and vehicular pollution.

 Additional Information

• PM_2.5 Characteristics:
• It refers to fine particulate matter with a diameter of 2.5 micrometers or less, which is small enough to penetrate the lung barrier and enter the bloodstream.
• Chronic exposure is a leading cause of asthma, lung cancer, and heart disease, contributing to millions of premature deaths globally.
• Primary Pollution Sources in India:
• Agricultural Burning: The seasonal practice of stubble burning in northern states like Punjab and Haryana significantly spikes pollution levels during winter.
• Energy Production: Heavy reliance on coal-fired power plants remains a dominant source of sulfur dioxide and particulate matter.
• Urban Factors: Rapid construction activities and unmanaged waste disposal (biomass burning) exacerbate the concentration of suspended dust and toxic fumes.
• Regional Rankings:
• Other countries consistently ranking high in the IQAir assessment alongside India include Bangladesh and Pakistan, reflecting the transboundary nature of air pollution in the Indo-Gangetic Plain.

The correct answer is Privatization.

Key Points

• Privatization refers to the transfer of ownership, management, and control of Public Sector Undertakings (PSUs) from the government to the private sector.
• The sale of Bharat Aluminium Company (BALCO) in 2001 is a landmark example of strategic disinvestment, a policy move where the government sells a significant portion of its equity along with management rights.
• In March 2001, the Government of India divested a 51% stake in BALCO to Sterlite Industries (India) Limited, a subsidiary of the Vedanta Group, for Rs. 551.5 crore.
• This was a historic transaction as it marked the first instance of the government handing over the management control of a profit-making PSU to a private entity under the Department of Disinvestment.
• The process was part of the LPG (Liberalization, Privatization, and Globalization) reforms aimed at improving industrial efficiency, fostering competition, and reducing the fiscal deficit of the state.

 Additional Information

• Liberalization:
• It involves the removal of government licensing, quotas, and regulatory hurdles to allow private businesses to operate more freely.
• The primary objective is to dismantle the License Raj and encourage a market-driven economy through deregulation.
• Globalization:
• It describes the increasing integration of the national economy with the global market through the movement of capital, labor, and technology.
• It facilitates Foreign Direct Investment (FDI) and international trade by lowering import duties and trade barriers.
• Nationalization:
• This is the process by which a government takes over a private enterprise or asset to bring it under public ownership.
• Prominent examples include the nationalization of the Indian Railways in 1951 and 14 major banks in 1969 under the Indira Gandhi administration.

The correct answer is Both river and oceanic dolphins.

Key Points

• Project Dolphin was officially announced by Prime Minister Narendra Modi during his Independence Day speech on August 15, 2020, to conserve both riverine and marine dolphin species.
• The project aims to protect the Gangetic River Dolphin and its habitat in the Ganga-Brahmaputra-Meghna and Karnaphuli-Sangu river systems, spanning states like Uttar Pradesh, Bihar, and West Bengal.
• The initiative also covers oceanic (marine) dolphins found in India’s Exclusive Economic Zone (EEZ), focusing on biodiversity health in the coastal and deep-sea ecosystems.
• Implemented by the Ministry of Environment, Forest and Climate Change (MoEFCC), the project employs advanced technologies such as acoustics, remote sensing, and GIS-based monitoring to track dolphin populations and curb illegal activities.
• The ten-year conservation plan is modeled after successful initiatives like Project Tiger and Project Elephant to ensure a sustainable increase in the population of these flagship aquatic species.

 Additional Information

• Gangetic River Dolphin (Platanista gangetica)
• It was declared the National Aquatic Animal of India in 2009 and is often referred to as the Susu due to the sound it makes while breathing.
• This species is categorized as Endangered on the IUCN Red List and is protected under Schedule I of the Wild Life (Protection) Act, 1972.
• As a blind species, it relies entirely on echolocation (ultrasonic sound waves) to navigate and hunt prey in the murky waters of the river systems.
• Marine Species Conservation
• Conservation efforts include protecting the Indian Ocean Humpback Dolphin and the Irrawaddy Dolphin, the latter of which is famously found in Chilika Lake, Odisha.
• The project emphasizes community involvement, particularly of fishermen and coastal residents, to reduce bycatch and habitat degradation.

The correct answer is Arunachal Pradesh.

Key Points

• The Namdapha flying squirrel (Biswamoyopterus biswasi) is an extremely rare, nocturnal, and arboreal rodent endemic to the Mishmi Hills and Patkai range in Arunachal Pradesh.
• It is found exclusively within the Namdapha National Park, located in the Changlang district, which is characterized by tropical evergreen forests.
• The species was first identified in 1981 based on a single holotype specimen, after which it went missing from scientific records for decades.
• In December 2023, researchers from the biodiversity conservation group Aaranyak successfully sighted and photographed the squirrel, marking its 'rediscovery' after a gap of 42 years.
• Due to its very small population and restricted geographical range, it is listed as Critically Endangered on the IUCN Red List and protected under Schedule I of the Wildlife (Protection) Act, 1972.

 Additional Information

• Assam:
• Known for the Kaziranga National Park and the One-horned Rhinoceros, but lacks the high-altitude evergreen niche of the Namdapha squirrel.
• Meghalaya:
• Famous for its living root bridges and the Nokrek Biosphere Reserve, which is a primary habitat for the Red Panda and Hoolock Gibbon.
• Sikkim:
• Home to the Khangchendzonga National Park, a UNESCO World Heritage site, focusing on Himalayan alpine and sub-alpine fauna.
• Namdapha National Park:
• It is the fourth largest national park in India and the only park in the world to host four feline species of big cats: Tiger, Leopard, Snow Leopard, and Clouded Leopard.
• The park lies near the Noa-Dihing River and serves as a vital biodiversity hotspot in the Eastern Himalayas.

The correct answer is A.P.J. Abdul Kalam.

Key Points

• Dr. A.P.J. Abdul Kalam is popularly known as the Missile Man of India for his exceptional leadership in the development of ballistic missile technology and launch vehicle systems.
• He was the primary architect of the Integrated Guided Missile Development Programme (IGMDP), which successfully developed strategic missiles including Prithvi, Agni, Trishul, Akash, and Nag.
• Before his tenure in missile defense, he served at ISRO as the Project Director for the SLV-III, India's first indigenous Satellite Launch Vehicle, which placed the Rohini satellite into orbit in 1980.
• In 1998, he played a crucial organizational and technical role as the Chief Project Coordinator during the Pokhran-II underground nuclear tests.
• He served as the 11th President of India from 2002 to 2007 and was honored with the Bharat Ratna in 1997 for his scientific contributions and modernization of defense technology.

 Additional Information

• V.K. Saraswat:
• A distinguished scientist and former Director General of DRDO who played a vital role in the development of the Prithvi missile and India's Anti-Satellite (ASAT) missile capabilities.
• K. Kasturirangan:
• An eminent space scientist who chaired ISRO from 1994 to 2003 and oversaw the development of the PSLV and GSLV rockets; he also headed the committee for the National Education Policy 2020.
• R. Chidambaram:
• A renowned nuclear physicist who served as the Principal Scientific Adviser to the Government of India and was a key figure in the design of nuclear devices for the Pokhran tests.

The correct answer is A hall for religious debates and discussions.

Key Points

• The Ibadat Khana, which translates to House of Worship, was a specialized meeting house built by the Mughal Emperor Akbar in 1575 AD at his capital city, Fatehpur Sikri.
• The primary objective of this structure was to provide a forum where religious scholars and theologians could gather to discuss various spiritual and theological matters in the presence of the Emperor.
• Initially, the debates were restricted to the Ulema and scholars of Sunni Islam; however, Akbar’s growing spiritual curiosity led him to open the assembly to representatives of all major religions by 1578.
• The intense discussions held within these walls helped Akbar realize that truth is not the monopoly of any single religion, which significantly influenced his religious policies and personal beliefs.

 Additional Information

• Din-i-Ilahi and Sulh-i-kul:
• The interfaith dialogues in the Ibadat Khana served as the foundation for Din-i-Ilahi (Divine Faith), a syncretic religion or social code introduced by Akbar in 1582.
• These discussions promoted the philosophy of Sulh-i-kul, which means Universal Peace and religious tolerance across the Mughal Empire.
• Prominent Participants:
• The debates involved scholars from diverse backgrounds, including Hindus (Devi and Purushottam), Jains (Hira Vijaya Suri), Christians (Jesuit missionaries like Father Rudolf Acquaviva), Zoroastrians (Dastur Meherji Rana), and Sikhs.
• Architectural Context:
• The Ibadat Khana is architecturally distinct from the Jama Masjid (the congregational mosque for Friday prayers) and the tomb of the Sufi saint Sheikh Salim Chishti, both of which are located nearby in Fatehpur Sikri but served purely devotional or funerary purposes.

The correct answer is Kitab-ul-Hind.

Key Points

• Al-Biruni, a 10th-11th century polymath from Khwarizm (modern Uzbekistan), arrived in India during the 11th century alongside the conqueror Mahmud of Ghazni.
• He authored the monumental work Kitab-ul-Hind (also known as Tahqiq-i-Hind), which was written in Arabic and is considered one of the most important historical sources on medieval India.
• The book consists of 80 chapters and provides a comprehensive analysis of Indian philosophy, religion, festivals, astronomy, social customs, weights and measures, and laws.
• To ensure accuracy, Al-Biruni mastered Sanskrit and translated several Greek and Indian works; he is frequently hailed as the 'Father of Indology' for his objective study of Brahmanical traditions and Puranic texts.
• The work is noted for its distinctive style, often beginning chapters with a question followed by a description based on Sanskritic traditions and ending with a comparison to other cultures.

 Additional Information

• Shahnameh:
• Written by the famous Persian poet Firdausi, who was also associated with the court of Mahmud of Ghazni.
• It is an epic poem that serves as the national epic of Greater Iran, detailing the mythical and historical past of the Persian Empire.
• Rihla:
• This travelogue was written by the Moroccan explorer Ibn Battuta in the 14th century.
• It documents his extensive travels across the Islamic world and his experiences in India during the reign of Muhammad bin Tughlaq.
• Tarikh-i-Firoz Shahi:
• Authored by Ziauddin Barani, a prominent historian during the Delhi Sultanate.
• It provides a detailed account of the administrative and political history of the Tughlaq dynasty, specifically focusing on Firoz Shah Tughlaq.

The correct answer is Prices of the current year.

Key Points

• Gross Domestic Product (GDP) at current prices, also known as Nominal GDP, refers to the total market value of all final goods and services produced within a country's domestic territory during a specific financial year, valued at the prevailing market prices of that same year.
• The estimation of Nominal GDP involves multiplying the physical output (quantity) produced in the current accounting year by the current market prices (price per unit) of those goods and services.
• This metric captures the impact of both changes in production volume and changes in price levels (inflation or deflation), making it a reflection of the current monetary value of the economy.
• If the prices of goods and services increase over time, the GDP at current prices will show an upward trend even if the actual quantity of production remains stagnant, a phenomenon often attributed to inflationary pressure.

 Additional Information

• Constant Base-Year Prices
• This method is used to calculate Real GDP, which reflects the actual growth of the economy by eliminating the effects of inflation.
• It involves valuing the current year's output at the prices of a specific benchmark year (Base Year), which is currently 2011-12 for India as designated by the National Statistical Office (NSO).
• GDP Deflator
• It is an index used to measure the level of inflation in the economy, derived by taking the ratio of Nominal GDP to Real GDP.
• The formula is expressed as: (Nominal GDP / Real GDP) × 100.
• Wholesale Price Index (WPI)
• This index measures the changes in the prices of goods sold and traded in bulk by wholesale businesses to other businesses, rather than to consumers.
• While it tracks inflation, it is distinct from the price set used for direct GDP valuation.

The correct answer is Minimum interference in economic affairs.

Key Points

• Laissez-faire is an economic philosophy that advocates for a free-market system where the government abstains from interfering in the workings of the free market.
• The term is a French phrase that literally translates to leave alone or let it be, reflecting the belief that the economy functions best when private individuals and businesses are left to make their own decisions.
• This theory is rooted in the classical economic school and was popularized by Adam Smith in his seminal 1776 work, The Wealth of Nations. Smith argued that an Invisible Hand guides the market toward efficiency through individual self-interest.
• Under this doctrine, the government's role is strictly limited to protecting property rights, enforcing contracts, and maintaining national defense and public order.
• It opposes protectionism, subsidies, state-granted monopolies, and restrictive regulations, asserting that competition naturally regulates prices and production quality.

 Additional Information

• Total control of the economy
• This describes a Command Economy or Planned Economy, typically found in Communist or Authoritarian regimes where the state dictates all economic output.
• Setting prices for all goods
• This refers to Price Controls or Fixed Pricing, which are interventions used by governments to prevent inflation or ensure affordability, directly contradicting Laissez-faire principles.
• Owning all industries
• This concept is known as State Ownership or Nationalization, a core tenet of Socialism where the means of production are held by the government rather than the private sector.

The correct answer is Bengal and Bihar.

Key Points

• The Permanent Settlement, also known as the Istamrari Settlement, was introduced by Lord Cornwallis in 1793.
• It was primarily implemented in the Bengal Presidency, which historically encompassed the modern-day regions of Bengal, Bihar, and Odisha.
• Under this system, Zamindars were recognized as the legal owners of the land, acting as agents for the East India Company to collect land revenue from peasants.
• The revenue amount was fixed permanently and could not be increased in the future; the East India Company received 10/11th of the total revenue, while the Zamindar retained 1/11th as their share.
• The system included a strict Sunset Clause, where the Zamindari rights would be auctioned off if the revenue was not paid by sunset on a specified date.

 Additional Information

• Ryotwari System:
• Introduced in the Madras Presidency and Bombay Presidency by Sir Thomas Munro and Alexander Read.
• In this system, the revenue was settled directly with the Ryots (cultivators), and the land revenue rates were revised periodically every 20 to 30 years.
• Mahalwari System:
• Introduced in the North-West Provinces, Central India, and parts of the Punjab by Holt Mackenzie in 1822.
• The unit of revenue assessment was the Mahal (village or estate), and the village community was collectively responsible for payment.
• Lord Cornwallis:
• Served as the Governor-General of Bengal and is often referred to as the Father of Civil Services in India for his administrative reforms.

The correct answer is Assam.

Key Points

• Bagurumba is an indigenous folk dance of the Bodo tribe, which is one of the largest ethnic groups in the state of Assam.
• The dance is colloquially referred to as the Butterfly Dance because the rhythmic movements of the dancers, with their arms outstretched holding their scarves, mimic the fluttering of butterflies.
• It is traditionally performed by Bodo women during the Bwisagu festival, which marks the Bodo New Year and occurs in mid-April (synchronous with Bohag Bihu).
• Performers wear vibrant traditional costumes, including the Dokhona (a wrap-around dress), Jwmgra (scarf), and Aronai (traditional cloth), creating a visually striking display.
• The musical accompaniment includes traditional instruments such as the Sifung (a long bamboo flute), Kham (a large drum made of wood and goat skin), Serja (a bowed instrument), and Gongona (a jaw harp).

 Additional Information

• West Bengal:
• Prominent folk dances include Chhau (a martial and mask dance from Purulia), Gambhira, and Brita (a devotional dance performed by women seeking blessings for children).
• Odisha:
• Famous for the Ghumura dance, the Gotipua dance (precursor to Odissi), and the Sambalpuri folk dance which is popular during festivals in Western Odisha.
• Maharashtra:
• Key folk traditions include Lavani, performed to the beats of the Dholki, and the Koli dance, which reflects the lifestyle of the state's fishing community.

The correct answer is Lord Mountbatten.

Key Points

• Lord Mountbatten was appointed as the last Viceroy of British India in March 1947 with the mandate to oversee the transfer of power from the British Crown to Indian hands.
• He proposed the 3rd June Plan, also known as the Mountbatten Plan, which laid the foundation for the partition of India into two independent dominions: India and Pakistan.
• Upon India gaining independence on August 15, 1947, he became the first Governor-General of independent India at the invitation of the Indian National Congress.
• He held this office until June 1948, facilitating the integration of princely states into the Indian Union before being succeeded by C. Rajagopalachari.

 Additional Information

• Lord Wavell:
• Served as the Viceroy of India from 1943 to 1947.
• He is known for proposing the Wavell Plan at the Simla Conference of 1945 to create an Interim Government.
• Lord Linlithgow:
• Served as the Viceroy from 1936 to 1943, holding the longest tenure in the post.
• His term saw the Quit India Movement in 1942 and the declaration of India's entry into World War II without consulting Indian leaders.
• Lord Canning:
• Served as the last Governor-General of the East India Company and became the first Viceroy of India in 1858.
• He presided over the Revolt of 1857 and the transition of power from the Company to the British Crown via the Government of India Act 1858.

The correct answer is Kazuo Ishiguro.

Key Points

• Kazuo Ishiguro is a Nobel Prize-winning British novelist, born in Nagasaki, Japan, who moved to the United Kingdom in 1960.
• The Remains of the Day, published in 1989, is his third and most famous novel, which earned him the prestigious Man Booker Prize for Fiction.
• The story is narrated in the first person by Stevens, an aging butler at Darlington Hall, who reflects on his decades of service to Lord Darlington during the interwar period in Britain.
• The narrative delves into deep psychological themes of emotional repression, the blind pursuit of duty, and the political naivety of the British aristocracy regarding the rise of Nazism.
• The novel is highly regarded for its subtle use of unreliable narration, as Stevens gradually reveals his personal regrets regarding his relationship with the housekeeper, Miss Kenton.

 Additional Information

• Biographical and Literary Context:
• In 2017, Kazuo Ishiguro was awarded the Nobel Prize in Literature for his novels of great emotional force that uncover the abyss beneath our illusory sense of connection.
• He was knighted in 2018 for his services to literature and has authored other major works like Never Let Me Go and Klara and the Sun.
• Other Contemporary Authors:
• Ian McEwan: A prominent English novelist known for Atonement (2001) and Amsterdam, the latter of which won the Booker Prize in 1998.
• Salman Rushdie: A British-American novelist famous for Midnight's Children, which won the Booker Prize in 1981 and the Best of the Booker.
• Haruki Murakami: A Japanese writer known for surrealist and magical realist fiction, including Norwegian Wood and The Wind-Up Bird Chronicle.

The correct answer is Vinoba Bhave.

Key Points

• The Bhoodan Movement, also referred to as the Land Gift Movement, was a voluntary land reform campaign initiated by Acharya Vinoba Bhave on April 18, 1951.
• The movement originated in the village of Pochampally in the Nalgonda district (currently in Telangana), where the first donation of land was made to help the landless poor.
• The primary objective was to persuade wealthy landowners to voluntarily give at least one-sixth of their land to the landless, aiming to solve the problem of land scarcity and agricultural poverty through non-violent means.
• Vedre Ram Chandra Reddy was the first individual to donate land, providing 80 acres of his own property, which marked the official start of this socio-political movement.
• The movement was deeply rooted in the Gandhian philosophy of Sarvodaya (progress for all) and Ahimsa (non-violence), seeking to achieve social justice without state coercion or legal force.

 Additional Information

• Mahatma Gandhi:
• He was the spiritual and ideological mentor of Vinoba Bhave.
• While he passed away in 1948, his concepts of Trusteeship and Gram Swaraj (village self-rule) were the guiding forces behind the Bhoodan and Gramdan movements.
• Jayaprakash Narayan:
• Commonly known as JP, he was a socialist leader who left active party politics in 1954 to join the Bhoodan Movement.
• He played a crucial role in expanding the movement into the Gramdan phase, where entire villages were requested to surrender land rights for collective ownership.
• Jawaharlal Nehru:
• As the Prime Minister, his administration supported the movement as a complementary social effort alongside formal government Land Ceiling Acts and the abolition of the Zamindari system.

The correct answer is Traditional artisans and craftspeople.

Key Points

• The PM Vishwakarma scheme is a Central Sector Scheme launched by the Prime Minister on September 17, 2023 (Vishwakarma Jayanti), to provide end-to-end support to artisans and craftspeople.
• The scheme specifically targets individuals who work with their hands and tools, aiming to preserve and promote the Guru-Shishya parampara or family-based practice of traditional skills.
• A total of 18 traditional trades are initially covered under the scheme, including Carpenters, Blacksmiths, Potters, Goldsmiths, Sculptors, Cobblers, and Masons.
• The primary objective is to improve the quality, scale, and reach of the products made by Vishwakarmas and integrate them into the domestic and global value chains.

 Additional Information

• Core Benefits of the Scheme:
• Recognition: Artisans are provided with a PM Vishwakarma Certificate and an Identity Card to grant them formal professional identity.
• Skill Upgradation: It involves Basic Training (5 to 7 days) and Advanced Training (15 days or more), during which a stipend of 500 rupees per day is provided.
• Toolkit Incentive: Upon the start of basic training, a toolkit incentive of up to 15,000 rupees is provided through e-vouchers to help purchase modern equipment.
• Credit Support: Beneficiaries can access collateral-free Enterprise Development Loans of up to 3 lakh rupees in two tranches (1 lakh and 2 lakh) at a concessional interest rate of 5%.
• Marketing Support: The Ministry of MSME provides support in terms of Quality Certification, branding, and linkage to e-commerce platforms to boost sales.

The correct answer is Newton m² per coulomb.

Key Points

• Electric Flux is defined as the total number of electric field lines passing through a given surface area in a unit of time.
• It is a scalar quantity that describes the strength and distribution of the electric field over a surface.
• The mathematical formula for electric flux is the product of the electric field (E) and the component of the area (A) perpendicular to the field: $\Phi_E = E \cdot A \cdot \cos\theta$.
• The SI unit of the electric field is Newton per coulomb (N/C).
• The SI unit of surface area is square meters (m²).
• By multiplying the units of the electric field and area, the resulting unit of electric flux is (Newton/Coulomb) × square meters, which is Newton m² per coulomb.
• The unit can also be represented as Newton m² C⁻¹.

Additional Information

• Weber: This is the SI unit of magnetic flux, not electric flux. It is equivalent to one Tesla-square meter.
• Tesla: This is the SI unit of magnetic field strength or magnetic flux density.
• Joule: This is the SI unit of energy or work, defined as the work done by a force of one Newton over a displacement of one meter.
• Volt-meter: Since the electric field can also be measured in Volts per meter (V/m), electric flux can alternatively be expressed in Volt-meters (V × m).
• The dimensional formula for electric flux is [ML³T⁻³A⁻¹].

The correct answer is An electronic tag for automatic toll payments.

Key Points

• FASTag is a device that employs Radio Frequency Identification (RFID) technology for making toll payments directly while the vehicle is in motion.
• It is a flagship initiative under the National Electronic Toll Collection (NETC) program, designed by the National Payments Corporation of India (NPCI) to automate toll collection on National Highways.
• The tag is typically affixed to the windscreen of the vehicle and is linked to a prepaid account or a bank account (savings/current) from which the toll amount is automatically deducted.
• The primary objective of this system is to reduce waiting time at toll plazas, minimize fuel consumption by preventing idling, and promote cashless transactions across the transport sector.

 Additional Information

• Operational Framework:
• The National Highways Authority of India (NHAI) and Indian Highways Management Company Limited (IHMCL) are the lead agencies for the rollout and management of the FASTag infrastructure.
• The Ministry of Road Transport and Highways (MoRTH) made FASTag mandatory for all M and N category vehicles (four-wheelers and above) starting from February 15, 2021.
• Vehicles entering a FASTag-only lane without a functional tag or with insufficient balance are liable to pay double the applicable toll fee as a penalty.
• Technological Features:
• RFID (Radio Frequency Identification) allows the toll scanner to read the unique identification number of the tag without physical contact.
• It supports interoperability, meaning a single tag can be used across different toll plazas managed by different concessionaires throughout India.

The correct answer is 'Pakistan'

Key Points

• Mekong-Ganga Cooperation (MGC):
• The Mekong-Ganga Cooperation (MGC) is a regional initiative established to facilitate closer contact between the people inhabiting these two major river basins.
• It comprises six member countries: India and five ASEAN nations, namely Cambodia, Lao PDR, Myanmar, Thailand, and Vietnam.
• Pakistan is not a member of this initiative as it does not fall within the geographical scope of the Mekong or Ganga river basins in the context of this specific regional cooperation.
• The initiative focuses on four main areas of cooperation: tourism, culture, education, and transport and communications.
• The MGC aims to strengthen the historical and cultural ties between the member nations while promoting economic growth and social development through shared resources and expertise.

Additional Information

• Laos (Lao PDR):
• Laos is a landlocked country in Southeast Asia and a founding member of the MGC.
• The first MGC Ministerial Meeting was held in Vientiane, the capital of Laos, in November 2000, where the Vientiane Declaration was signed.
• India:
• India is the primary partner representing the Ganga river basin in this cooperation.
• India provides various scholarships (MGC Scholarship Scheme) and training programs to students and professionals from the other five member countries to foster educational ties.
• Vietnam:
• Vietnam is a key member located at the downstream end of the Mekong River.
• It plays a significant role in the MGC, particularly in projects related to water resource management, agriculture, and regional connectivity.

Important Points

• The MGC was launched on November 10, 2000, at the first MGC Ministerial Meeting in Vientiane, Laos.
• The initiative is named after the Ganga and the Mekong, which are two of the largest and most civilizationally significant rivers in Asia.
• The chairmanship of the MGC is rotated among the member countries in alphabetical order.
• The India-Myanmar-Thailand Trilateral Highway is one of the major transport projects discussed under the MGC framework to improve land connectivity between South and Southeast Asia.
• The cooperation also emphasizes the preservation of cultural heritage, such as the conservation of ancient temples and archaeological sites that link India with Southeast Asian history.

The correct answer is 'Andhra Pradesh'

Key Points

• 32nd National Games (2002):
• The 32nd edition of the National Games was held in the state of Andhra Pradesh from December 13 to December 22, 2002.
• The games were primarily hosted in the capital city, Hyderabad, and the port city, Visakhapatnam.
• The event was significant for its world-class infrastructure, including the construction of the Gachibowli Athletic Stadium and several other indoor stadiums in Hyderabad.
• The mascot for the 2002 National Games was 'Veera', an Ongole bull, representing the strength and heritage of the region.
• Host state Andhra Pradesh emerged as the overall champions, winning the prestigious Raja Bhalendra Singh Trophy for the first time.

Additional Information

• Tamil Nadu:
• Tamil Nadu hosted the National Games in 1994 (Madras/Chennai). It has a long history of promoting sports but was not the host for the 2002 edition.
• Punjab:
• Punjab hosted the 31st National Games in 2001, just a year before the Andhra Pradesh edition. The 2001 games were held across cities like Ludhiana, Patiala, and Jalandhar.
• Hyderabad:
• While Hyderabad was the primary venue and city where the games took place, the question specifically asks for the state that hosted the edition. Hyderabad is the capital city (now of Telangana, but then of Andhra Pradesh), making Andhra Pradesh the technically correct state-level answer.

Important Points

• The National Games of India are modeled after the Olympics and are organized by the Indian Olympic Association (IOA).
• The first modern National Games (then known as the Indian Olympic Games) were held in Lahore in 1924.
• The primary objective of these games is to identify and nurture sporting talent at the grassroots level to represent India in international arenas like the Asian Games and the Olympics.
• The 2002 games in Andhra Pradesh are often cited as a turning point in Indian domestic sports due to the massive investment in sports technology and infrastructure seen during that period.

The correct answer is 'Uttarakhand'

Key Points

• 38th National Games:
• The Indian Olympic Association (IOA) has officially allotted the hosting rights for the 38th National Games to the state of Uttarakhand.
• The event is scheduled to be held in early 2025, specifically from January 28 to February 14, across various cities in the state.
• Uttarakhand is preparing to host over 30 sporting disciplines, utilizing infrastructure in cities such as Dehradun, Rishikesh, Haridwar, Haldwani, Rudrapur, and Gularbhoj.
• This marks a significant milestone for Uttarakhand as it seeks to showcase its sports infrastructure and promote tourism through a major national-level multi-sport event.

Additional Information

• Madhya Pradesh:
• Madhya Pradesh has been a proactive state in hosting sports events, notably organizing the 5th edition of the Khelo India Youth Games in 2023.
• While it has robust sports facilities in Bhopal and Indore, it was not the state designated for the 38th edition of the National Games.
• Andhra Pradesh:
• Andhra Pradesh has a history of hosting the National Games, having organized the 32nd edition in 2002 (jointly with Hyderabad, which was then part of the state).
• Although the state continues to develop sports talent, it is not the host for the upcoming 2025 games.
• Karnataka:
• Karnataka hosted the 34th National Games in 1997 in Bangalore and Mysore.
• The state remains a major hub for athletics and hockey in India, but it was not selected as the venue for the 38th edition.

Important Points

• The 37th National Games were held in Goa in 2023, where Maharashtra topped the medal tally.
• The National Games are organized by the Indian Olympic Association (IOA), currently headed by President P.T. Usha.
• The primary objective of these games is to identify and nurture sporting talent for international competitions like the Olympics and Asian Games.
• Uttarakhand has proposed including traditional sports and ensuring eco-friendly practices during the 2025 event to align with its "Green Games" vision.

The correct answer is 'China'

The Karakoram Highway (KKH) is a monumental engineering feat and a vital international land route. Often referred to as the "Friendship Highway," it serves as the primary artery connecting Pakistan and China through some of the most rugged and highest mountain ranges in the world, including the Karakoram, Himalayas, and Hindu Kush.

Key Points

• China-Pakistan Connection:
• The Karakoram Highway connects the Khyber Pakhtunkhwa and Gilgit-Baltistan regions of Pakistan with the Xinjiang Uyghur Autonomous Region of China.
• It starts from Hasan Abdal in Pakistan and extends to Kashgar in China, covering a total distance of approximately 1,300 kilometers (810 miles).
• The road crosses the international border at the Khunjerab Pass, which, at an elevation of 4,693 meters (15,397 feet), is the highest paved international border crossing in the world.
• Due to its high altitude and the extreme conditions under which it was built, it is frequently referred to as the "Eighth Wonder of the World."

Additional Information

• Iran:
• Pakistan shares a border with Iran to the west. The primary road link between the two countries is through the N-40 Highway, which connects Quetta (Pakistan) to Taftan and then into Zahedan (Iran).
• While there is significant trade, there is no "Karakoram" equivalent high-mountain highway connecting these two nations.
• Afghanistan:
• Pakistan and Afghanistan are connected through several mountain passes, most notably the Khyber Pass (connecting Peshawar to Kabul) and the Bolan Pass.
• The border between Pakistan and Afghanistan is known as the Durand Line. While mountainous, these routes are distinct from the Karakoram system.
• Kazakhstan:
• Kazakhstan is a Central Asian country that does not share a direct land border with Pakistan.
• Pakistan is separated from Kazakhstan by Afghanistan and Tajikistan (specifically the narrow Wakhan Corridor of Afghanistan). Therefore, no direct highway like the KKH exists between them.

Important Points

• The construction of the highway began in 1959 and was completed and opened to the public in 1979. It was a joint project between the governments of Pakistan and China.
• The KKH is a cornerstone of the China-Pakistan Economic Corridor (CPEC), a multi-billion dollar infrastructure project aimed at linking China's Xinjiang province with Pakistan's Gwadar Port.
• The highway is of immense strategic and military importance for both nations, providing China with a shorter route to the Arabian Sea and the Middle East.
• The route is a popular destination for adventure tourism, offering views of famous peaks such as Nanga Parbat and K2 (visible from certain vantage points near the range).

The correct answer is Jupiter.

Key Points

• The Great Red Spot is a massive, persistent anticyclonic storm located in the southern hemisphere of Jupiter.
• It is the most famous feature in Jupiter's atmosphere and is large enough to fit at least one Earth inside it, although its size has been shrinking over the last century.
• Astronomers have observed this storm for over 300 years, with early sightings dating back to the late 1600s by Giovanni Cassini and Robert Hooke.
• The storm's red color is thought to be caused by complex organic molecules, red phosphorus, or sulfur compounds reacting with ultraviolet radiation from the Sun.
• The winds within the Great Red Spot are extremely powerful, reaching speeds of up to 430 to 680 kilometers per hour at its edges.
• As a Gas Giant, Jupiter lacks a solid surface, allowing storms like the Great Red Spot to persist for centuries without the friction of land to weaken them.

Additional Information

• Jupiter is the largest planet in our solar system and is primarily composed of Hydrogen and Helium.
• Saturn is well-known for its extensive and bright ring system and also experiences large storms, such as the Great White Spot.
• Neptune once exhibited a similar feature known as the Great Dark Spot, which was a massive storm system observed by the Voyager 2 spacecraft in 1989.
• Uranus is an Ice Giant with a unique tilted axis, causing it to rotate nearly on its side.

The correct answer is Scheduled Tribes.

Key Points

• The Uttarakhand Legislative Assembly passed the Uniform Civil Code (UCC) Bill, 2024, on February 7, 2024, making Uttarakhand the first state in independent India to implement a uniform law for marriage, divorce, land, property, and inheritance.
• According to Section 2 of the Bill, the provisions of the Code do not apply to the Scheduled Tribes (STs) as defined under Article 366 (25) read with Article 342 of the Constitution of India.
• The exemption was specifically included to protect the unique customary rights, cultural identities, and traditional practices of tribal communities such as the Tharu, Boxa, Bhotia, Jaunsari, and Raji groups residing in the state.
• The Bill provides a common legal framework for all other residents of the state, effectively overriding various personal laws based on religious scriptures and customs for those not exempted.

 Additional Information

• Uniform Civil Code (UCC):
• It refers to a single law for the entire country (or state), applicable to all religious communities in their personal matters such as marriage, divorce, inheritance, and adoption.
• Article 44 of the Directive Principles of State Policy (DPSP) in the Indian Constitution mandates that the State shall endeavor to secure a UCC for the citizens throughout the territory of India.
• While Goa has followed a Portuguese Civil Code since 1867, Uttarakhand is the first state to draft and pass its own legislation post-independence.
• Impact on other groups:
• The personal laws of Hindus, Muslims, Christians, Sikhs, Jains, and Buddhists in Uttarakhand are now subsumed under this Code, eliminating practices like polygamy and Iddat while standardizing the minimum age for marriage and procedures for live-in relationships.

The correct answer is - Melatonin

Key Points

• Melatonin
• Melatonin is a hormone primarily synthesized and secreted by the pineal gland, a small endocrine gland located in the brain.
• Its primary function is to regulate the circadian rhythm, which is the internal 24-hour clock that manages the sleep-wake cycle.
• The production of melatonin is influenced by light; levels typically increase in the evening as it gets dark, reaching peak levels in the middle of the night, and decrease during daylight hours to promote alertness.

Additional Information

• Other Hormones and Their Sources
• Cortisol: Often referred to as the stress hormone, it is secreted by the adrenal cortex (located atop the kidneys) and helps regulate metabolism and the immune response.
• Insulin: Produced by the beta cells of the pancreas, it is crucial for regulating blood glucose levels by facilitating the uptake of glucose into cells.
• Oxytocin: Produced in the hypothalamus and released by the posterior pituitary gland, it plays a key role in social bonding, childbirth, and milk ejection during breastfeeding.
• Pineal Gland
• Besides melatonin, the pineal gland is also involved in the regulation of reproductive hormones and interacts with the hypothalamus to manage various biological functions.
• In many animals, it acts as a biological light meter, helping the body adjust to seasonal changes.

The correct answer is 'Marriage'

Key Points

• Marriage as a Reason for Migration:
• In India, marriage is the most significant reason for the migration of females. This is primarily due to the social custom of patrilocality, where a woman moves from her parental home to her husband's home after marriage.
• According to the Census of India 2011, marriage accounts for the vast majority of female migration, particularly in rural areas.
• While male migration is largely driven by economic factors, female migration is predominantly governed by social and familial transitions.
• This trend is observed across almost all states in India, making it the leading cause of internal migration among the female population.

Additional Information

• Employment:
• Employment is the primary reason for migration among males in India. Men often move from rural to urban areas in search of better job opportunities and higher wages.
• For females, migration for employment is significantly lower compared to marriage, although it is gradually increasing in urban centers as more women enter the professional workforce.
• Education:
• Migration for education occurs when individuals move to cities or towns to access better schooling, colleges, or universities.
• While education is a growing reason for migration among the youth, it constitutes a small percentage of the total female migration compared to the overwhelming numbers associated with marriage.
• Business:
• Migration for business involves moving to a new location to start or expand a commercial enterprise.
• This category accounts for a very small fraction of migration in India, and it is even less common among the female demographic compared to other factors like marriage or moving with the household.

Important Points

• As per the Census 2011, about 45.36 crore Indians (37% of the population) are internal migrants.
• Among the total female migrants, roughly 66% to 70% cite marriage as the reason for their relocation.
• In contrast, only a negligible percentage of males migrate due to marriage (mostly in specific matrilineal societies like parts of Meghalaya).
• The second most common reason for female migration is 'Moving with Household,' which occurs when a woman moves because the entire family or the primary breadwinner is relocating.

The correct answer is 'An area with tax benefits to promote exports'

Key Points

• Special Economic Zone (SEZ):
• A Special Economic Zone (SEZ) is a specifically delineated duty-free enclave and is deemed to be foreign territory for the purposes of trade operations and duties and tariffs.
• The primary objective of establishing SEZs in India is to enhance foreign investment, promote the export of goods and services, and create employment opportunities.
• Units located within an SEZ enjoy a variety of incentives, such as duty-free import or domestic procurement of goods for development, operation, and maintenance of SEZ units.
• They are provided with 100% Income Tax exemption on export income under Section 10AA of the Income Tax Act for the first five years, 50% for the next five years, and 50% of the ploughed-back export profit for the subsequent five years.
• SEZs are governed by a three-tier administrative set-up: The Board of Approval (apex body), the Unit Approval Committee (at the zone level), and the Development Commissioner.

Additional Information

• Historical Monument:
• A historical monument is a structure, statue, or building that is recognized for its historical, architectural, or cultural importance.
• In India, these are often protected by the Archaeological Survey of India (ASI) under the Ancient Monuments and Archaeological Sites and Remains Act. They are preserved for heritage purposes rather than economic trade activities.
• Government-owned Factory:
• These are industrial units owned and operated by the state or central government, often referred to as Public Sector Undertakings (PSUs).
• While they contribute to the economy, they are defined by their ownership structure rather than being a specific "zone" with unique tax and trade laws designed specifically for export promotion.
• National Park:
• A national park is an area strictly reserved for the betterment of wildlife and biodiversity, where activities like forestry, grazing, or cultivation are generally not permitted.
• These areas are governed by environmental laws (like the Wildlife Protection Act, 1972) and focus on conservation rather than industrial or commercial export activities.

Important Points

• The SEZ Act, 2005, supported by SEZ Rules, came into effect on February 10, 2006, providing the legal framework for the establishment and operation of these zones.
• India was one of the first in Asia to recognize the effectiveness of the Export Processing Zone (EPZ) model, with Asia's first EPZ set up in Kandla, Gujarat, in 1965.
• The SEZ policy was formally announced in April 2000 to overcome the shortcomings experienced on account of the multiplicity of controls and clearances and the absence of world-class infrastructure.
• One of the key features of the SEZ scheme is "Single Window Clearance" for setting up an SEZ and for setting up a unit within the SEZ.

The correct answer is Gall bladder

Key Points

• The gall bladder is a small, pear-shaped organ located beneath the liver. Its primary function is to store and concentrate bile produced by the liver until it is needed for digestion.
• When fatty foods enter the duodenum (the first part of the small intestine), the gall bladder contracts to release bile through the common bile duct.
• Bile is essential for the emulsification of fats, a process that breaks down large fat globules into smaller droplets, making it easier for the enzyme lipase to digest them.
• The liver is the organ that actually synthesizes and secretes bile, but it does not serve as the primary storage site for release during meals.
• The pancreas is a gland that produces pancreatic juice containing enzymes like amylase, lipase, and trypsin, as well as hormones like insulin, but it is not involved in bile storage.
• The stomach functions in the mechanical churning of food and the initial digestion of proteins through hydrochloric acid (HCl) and the enzyme pepsin.

Additional Information

• Bile contains bile salts, cholesterol, water, and bilirubin (a pigment derived from the breakdown of red blood cells).
• The hormone cholecystokinin (CCK) is released by the small intestine in response to fat, signaling the gall bladder to release its contents.
• If the balance of chemicals in the gall bladder becomes upset, gallstones (cholelithiasis) can form, which may block the bile ducts.
• Humans can live without a gall bladder; if it is removed (cholecystectomy), bile flows continuously from the liver into the small intestine rather than being stored and released in concentrated bursts.

The correct answer is 'Clean and Press'

Key Points

• Clean and Press:
• The Clean and Press was one of the three standard lifts in Olympic weightlifting until it was officially removed from international competition after the 1972 Munich Olympics.
• The lift consisted of two parts: the 'clean,' where the barbell is lifted from the floor to the shoulders, and the 'press,' where the weight is pushed overhead using only the strength of the arms and shoulders while keeping the legs straight.
• The primary reason for its removal was the extreme difficulty in judging the 'press' portion. Rules required the athlete to remain upright without using leg drive or excessive backward leaning (layback).
• Over time, athletes developed techniques to arch their backs significantly to engage their chest muscles, making the lift resemble a standing bench press. This led to inconsistent officiating and health concerns regarding spinal injuries.

Additional Information

• Snatch:
• The Snatch is one of the two remaining lifts in modern Olympic weightlifting. It involves lifting the barbell from the ground to overhead in one continuous, fluid motion.
• It is considered the most technical lift in weightlifting, requiring high levels of flexibility, speed, and balance.
• Unlike the Clean and Press, the Snatch remains a core component of the Olympic program today.
• Clean and Jerk:
• The Clean and Jerk is the second of the two lifts currently performed in Olympic competitions. It is a two-stage lift where the bar is first brought to the shoulders (clean) and then driven overhead (jerk) using the power of the legs.
• This lift allows athletes to move the heaviest weights possible compared to the Snatch or the former Clean and Press.
• It remains the final event in weightlifting competitions, often determining the overall winner based on the total weight lifted.
• None of these:
• This option is incorrect because the "Clean and Press" is the specific historical lift that was discontinued due to the aforementioned rule changes and judging complexities.

Important Points

• Before 1972, the winner of a weightlifting competition was decided by the Total of three lifts: the Snatch, the Clean and Jerk, and the Clean and Press.
• The removal of the Press transformed weightlifting from a sport that rewarded static strength to one that emphasizes explosive power and speed.
• The International Weightlifting Federation (IWF) made the decision to drop the lift in 1972 to simplify the sport for spectators and ensure fairer judging.
• Since the 1976 Montreal Games, Olympic weightlifting has consisted solely of the Snatch and the Clean and Jerk.

The correct answer is POLIX (X-ray polarimeter).

Key Points

• POLIX (X-ray Polarimeter Instrument) is the primary scientific payload onboard the XPoSat (X-ray Polarimeter Satellite), which was launched by ISRO on January 1, 2024. It is designed to measure the polarization of X-rays from astronomical sources like black holes and neutron stars. Hence, statement 3 is correct.
• Aditya-L1 is India's first dedicated solar mission, launched on September 2, 2023, to study the Sun from the Lagrange Point 1 (L1). It carries seven distinct payloads to observe the photosphere, chromosphere, and the outermost layers of the Sun.
• SUIT (Solar UV Imaging Telescope) is an integral payload of Aditya-L1 that images the Solar Photosphere and Chromosphere in near Ultra-violet (UV). Hence, statement 1 is incorrect as it is part of Aditya-L1.
• VELC (Visible Emission Line Coronagraph) is the prime payload of Aditya-L1, designed to study the solar corona and dynamics of Coronal Mass Ejections (CMEs). Hence, statement 2 is incorrect.
• SoLEXS (Solar Low Energy X-ray Spectrometer) is designed to monitor the soft X-ray flares from the Sun to understand solar flare heating. Hence, statement 4 is incorrect.

 Additional Information

• Aditya-L1 Payloads:
• HEL1OS: High Energy L1 Orbiting X-ray Spectrometer for hard X-ray studies.
• ASPEX: Aditya Solar wind Particle Experiment to study solar wind properties.
• PAPA: Plasma Analyser Package for Aditya to understand solar wind composition.
• MAG: Advanced Tri-axial High Resolution Digital Magnetometers to measure the low intensity interplanetary magnetic field at L1.
• XPoSat Mission:
• It is the world's second polarimetry mission after NASA's IXPE.
• XSPECT: The secondary payload on XPoSat that provides fast timing and high-speed spectroscopic data in the energy range of 0.8-15 keV.

The correct answer is 'FISA'

Key Points

• FISA (Fédération Internationale des Sociétés d'Aviron):
• FISA is the official acronym for the International Federation of Rowing Societies, which is the governing body for international rowing.
• Founded on June 25, 1892, in Turin, Italy, it is the oldest international sports federation in the Olympic movement.
• The federation is responsible for establishing the rules of racing, organizing international competitions, and promoting the sport of rowing globally.
• Its headquarters are located in Lausanne, Switzerland, which is also the home of the International Olympic Committee (IOC).
• While the organization rebranded its public-facing name to World Rowing in 2020 to be more accessible to an English-speaking audience, FISA remains its official legal name and acronym.

Additional Information

• FIFA (Fédération Internationale de Football Association):
• FIFA is the international governing body for association football, futsal, and beach soccer.
• It is responsible for the organization of football's major international tournaments, most notably the FIFA World Cup.
• Headquartered in Zurich, Switzerland, it oversees the national football associations of over 200 countries.
• FIH (Fédération Internationale de Hockey):
• The FIH is the global governing body for field hockey and indoor field hockey.
• It was founded in 1924 in Paris and is currently headquartered in Lausanne, Switzerland.
• The FIH organizes major international hockey events, including the Hockey World Cup and the FIH Pro League.
• IAAF (International Association of Athletics Federations):
• The IAAF was the international governing body for the sport of athletics (track and field, cross country running, road running, and racewalking).
• In 2019, the organization officially rebranded and changed its name to World Athletics.
• It is responsible for maintaining world records and organizing the World Athletics Championships.

Important Points

• Rowing has been a part of the Olympic Games since the 1900 Summer Olympics in Paris.
• The World Rowing Federation oversees various disciplines, including flatwater rowing, coastal rowing, and indoor rowing.
• The World Rowing Championships is the premier annual international rowing event, held at the end of the international rowing season.
• FISA was the first international federation to include a representative of the athletes on its Executive Committee, emphasizing its commitment to athlete welfare and governance.

The correct answer is Berlin 1936.

Key Points

• The Olympic torch relay was introduced for the first time during the XI Olympiad held in Berlin in 1936.
• The concept was developed by Carl Diem, the secretary-general of the Organizing Committee, as a means to link the Ancient Olympic Games with the modern movement through a physical journey.
• The ritual begins in Olympia, Greece, where the flame is ignited by the sun's rays using a parabolic mirror at the site of the ancient Temple of Hera.
• The 1936 relay covered over 3,180 kilometers and involved 3,331 runners traveling through seven countries: Greece, Bulgaria, Yugoslavia, Hungary, Austria, Czechoslovakia, and Germany.
• This tradition was designed to symbolize continuity, peace, and the spreading of the Olympic spirit from its historical roots to the contemporary host city.

 Additional Information

• Historical Milestones of the Olympic Flame:
• Amsterdam 1928: While the relay began later, the Olympic flame itself made its first modern appearance during these games, where it was lit in a cauldron atop a tower in the Olympic Stadium.
• Athens 1896: Although these were the inaugural Modern Olympic Games, they did not feature the flame or a relay ceremony.
• London 1948: Following the hiatus caused by World War II, this relay was famously called the Relay of Peace and included the first-ever sea crossing across the English Channel.
• Winter Games: The first torch relay for the Winter Olympics did not occur until the 1952 Oslo Games, though the flame was lit in Morgedal, Norway, rather than Greece for that specific edition.

The correct answer is 'Article 3'

Key Points

• Article 3:
• Article 3 of the Indian Constitution deals with the formation of new States and the alteration of areas, boundaries, or names of existing States.
• It empowers the Parliament to form a new state by separation of territory from any state, by uniting two or more states or parts of states, or by uniting any territory to a part of any state.
• Under this article, Parliament can increase the area of any state, diminish the area of any state, alter the boundaries of any state, and alter the name of any state.
• A bill for these purposes can be introduced in either House of Parliament only on the recommendation of the President.
• Before recommending the bill, the President must refer it to the state legislature concerned for expressing its views within a specified period, although the Parliament is not bound by those views.

Additional Information

• Article 2:
• Article 2 relates to the admission or establishment of new states that are not currently part of the Union of India.
• It gives Parliament the power to admit into the Union, or establish, new states on such terms and conditions as it thinks fit.
• Article 4:
• Article 4 declares that laws made under Article 2 and Article 3 (for the admission or establishment of new states and alteration of areas, boundaries, or names of existing states) are not to be considered as amendments of the Constitution under Article 368.
• This means such laws can be passed by a simple majority and by the ordinary legislative process.
• Article 368:
• Article 368 deals with the power of Parliament to amend the Constitution and the procedure thereof.
• Amendments under this article generally require a special majority (two-thirds of members present and voting and a majority of the total membership) and, in some cases, ratification by half of the state legislatures.

Important Points

• The Constitution of India does not guarantee the territorial integrity or continued existence of any state; hence, India is often described as an "indestructible union of destructible states."
• The power of Parliament to diminish the area of a state under Article 3 does not include the power to cede Indian territory to a foreign state. Cession of Indian territory requires a constitutional amendment under Article 368 (as held by the Supreme Court in the Berubari Union case, 1960).
• Settlement of a boundary dispute between India and another country does not require a constitutional amendment; it can be done by executive action as it does not involve cession of territory.

The correct answer is 'Article 73'

Key Points

• Article 73: Extent of Executive Power of the Union:
• Article 73 of the Indian Constitution stipulates that the executive power of the Union extends to all matters with respect to which Parliament has the power to make laws.
• It also includes the exercise of such rights, authority, and jurisdiction as are exercisable by the Government of India by virtue of any treaty or agreement.
• The executive power mentioned in this article is generally co-extensive with the legislative power of the Union, meaning the government can act administratively on subjects found in the Union List and, in certain cases, the Concurrent List.
• However, a proviso in this article clarifies that the executive power of the Union does not extend to matters belonging to the State Legislature unless expressly provided by the Constitution or by a law made by Parliament.

Additional Information

• Article 74:
• This article provides for a Council of Ministers with the Prime Minister at the head to aid and advise the President in the exercise of his functions.
• It establishes the parliamentary form of government where the President is the formal head, but the real executive power is exercised by the Council of Ministers.
• The 42nd and 44th Amendment Acts made the advice of the Council of Ministers binding on the President, though the President can ask the Council to reconsider such advice once.
• Article 75:
• This article deals with other provisions as to Ministers, such as their appointment, tenure, and salaries.
• It states that the Prime Minister shall be appointed by the President and other Ministers shall be appointed by the President on the advice of the Prime Minister.
• Crucially, it enshrines the principle of Collective Responsibility, stating that the Council of Ministers shall be collectively responsible to the Lok Sabha (House of the People).
• Article 77:
• This article outlines the "Conduct of Business of the Government of India."
• It mandates that all executive actions of the Government of India shall be expressed to be taken in the name of the President.
• It also empowers the President to make rules for the more convenient transaction of the business of the Government of India and for the allocation of said business among Ministers.

Important Points

• The Union Executive consists of the President, the Vice-President, the Prime Minister, the Council of Ministers, and the Attorney General for India.
• The executive power is not precisely defined in the Constitution, but it is generally understood as the residue of governmental functions that remain after legislative and judicial functions are taken away.
• While Article 73 defines the extent (the "where"), Article 77 defines the manner (the "how") in which the executive power is exercised.
• In a federal structure like India, the division of executive powers between the Union and the States generally follows the division of legislative powers as laid out in the Seventh Schedule.

The correct answer is '4400 kg'

Key Points

• CMS-03 Communication Satellite:
• CMS-03 is a part of the Communication Satellite (CMS) series developed by the Indian Space Research Organisation (ISRO). It is designed to provide high-quality telecommunication services across the Indian mainland and island territories.
• The launch mass of CMS-03 is approximately 4400 kg. This mass places it in the category of heavy communication satellites, requiring a powerful launch vehicle to reach the Geostationary Transfer Orbit (GTO).
• The satellite is equipped with advanced transponders (such as Ku-band and Ka-band) to enhance broadband connectivity, digital satellite news gathering, and VSAT services.
• The primary objective of the CMS series is to replace and augment the existing GSAT (Geostationary Satellite) series, ensuring continuity of service for various government and private sector communication needs.

Additional Information

• 2400 kg:
• This mass range is typical for medium-class communication satellites or older generations of the GSAT series. For example, CMS-01 (formerly GSAT-12R) had a much lower launch mass of around 1410 kg.
• Satellites in the 2000-2500 kg range are often launched using the GSLV Mk II, which has a lower payload capacity compared to the heavy-lift vehicles required for the 4-ton class.
• 5400 kg and 6400 kg:
• These weights represent ultra-heavy communication satellites. Currently, India's most powerful rocket, the LVM3 (GSLV Mk III), has a rated capacity of approximately 4000 kg to GTO.
• Satellites exceeding 5000 kg usually require international heavy-lift launchers like the Ariane 5/6 or SpaceX's Falcon Heavy. While ISRO is working on the Next Generation Launch Vehicle (NGLV) to carry such loads, CMS-03 is specifically designed within the 4400 kg threshold.

Important Points

• The CMS-03 satellite is intended to be launched by the LVM3 (Launch Vehicle Mark 3), which is ISRO's heaviest operational launch vehicle.
• The transition from the GSAT nomenclature to the CMS (Communication Satellite) nomenclature reflects ISRO's streamlined approach to categorizing its satellite missions based on their primary application.
• Heavy satellites like CMS-03 are crucial for High Throughput Satellite (HTS) missions, which provide significantly higher data rates than traditional communication satellites.
• The satellite's mission life is expected to be over 12 to 15 years, during which it will maintain a fixed position in geostationary orbit relative to Earth.

The correct answer is 'Geosynchronous Transfer Orbit'

Key Points

• Geosynchronous Transfer Orbit (GTO):
• The Geosynchronous Transfer Orbit is an elliptical orbit used to transfer a satellite from a lower altitude to a much higher geosynchronous or geostationary orbit.
• When ISRO launches communication satellites like the CMS (Communication Management System) series, the launch vehicle (such as GSLV) typically places the satellite into this intermediate GTO.
• The orbit is characterized by a low perigee (closest point to Earth) and a high apogee (farthest point from Earth, approximately 36,000 km).
• Once in GTO, the satellite uses its own onboard propulsion system, specifically the Liquid Apogee Motor (LAM), to perform orbit-raising maneuvers to reach its final circular Geostationary Orbit.

Additional Information

• Low Earth Orbit (LEO):
• LEO is an orbit relatively close to Earth's surface, typically at an altitude of 160 to 2,000 kilometers.
• It is commonly used for Earth observation satellites, remote sensing, and the International Space Station (ISS) because it allows for high-resolution imaging and rapid communication.
• Satellites in LEO travel at very high speeds (about 7.8 km/s) to maintain their orbit.
• Geostationary Orbit (GEO):
• GEO is a circular orbit at an altitude of approximately 35,786 kilometers directly above the Earth's equator.
• A satellite in this orbit has an orbital period equal to the Earth's rotational period, making it appear stationary from a fixed point on the ground.
• While this is the final destination for CMS satellites, they are not "placed" here directly by the launch vehicle; they are transferred here from the GTO.
• Polar Orbit:
• In a polar orbit, the satellite passes above or nearly above both poles of the Earth on each revolution.
• These orbits are highly inclined and are primarily used for reconnaissance, weather tracking, and mapping, as they allow the satellite to eventually scan the entire surface of the Earth as it rotates beneath.
• ISRO's PSLV (Polar Satellite Launch Vehicle) is the primary workhorse for placing satellites into Sun-Synchronous Polar Orbits.

Important Points

• The CMS series of satellites are designed to provide services in the Extended-C Band of the frequency spectrum, covering the Indian mainland, Andaman-Nicobar, and Lakshadweep islands.
• CMS-01 was the first satellite in this series, launched by the PSLV-C50 mission, which also utilized a GTO injection before the satellite moved to its final slot.
• The use of GTO is a fuel-efficient method for heavy communication satellites to reach high altitudes, as the launch vehicle provides the initial energy to reach the high apogee, and the satellite's internal fuel is used only for circularization.
• ISRO's GSLV Mk II and LVM3 (GSLV Mk III) are the primary launch vehicles designed specifically to carry heavy communication satellites into the Geosynchronous Transfer Orbit.

The correct answer is The worst sub-index value among the pollutants.

Key Points

• The Air Quality Index (AQI) is a standardized tool used by environmental agencies to report daily air quality and communicate the associated health risks to the public.
• The calculation of the overall AQI involves determining individual sub-indices for various pollutants based on their concentration levels in the atmosphere.
• The overall AQI for a specific time and location is determined by the maximum (highest) sub-index value among all the pollutants being monitored. This means the worst-performing pollutant (the one with the highest index) dictates the final AQI score.
• This dominant pollutant approach is used because it highlights the greatest health risk present at that moment. Using an average of all pollutants would be misleading, as it could hide the dangerous levels of a single toxic pollutant behind the low levels of others.
• Options suggesting the average concentration or the total number of pollutants are incorrect because they do not accurately represent the immediate health threat posed by the most concentrated pollutant.

Additional Information

• In India, the National Air Quality Index (NAQI) was launched in October 2014 to provide One Number-One Colour-One Description for the common man to judge air quality.
• The Indian AQI system considers eight pollutants: PM10, PM2.5, NO2, SO2, CO, O3, NH3, and Pb (Lead).
• The index is classified into six categories based on health impacts: Good (0–50), Satisfactory (51–100), Moderately Polluted (101–200), Poor (201–300), Very Poor (301–400), and Severe (401–500).
• The Central Pollution Control Board (CPCB) is the statutory organization responsible for monitoring and maintaining the air quality standards in India.

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For, HOUSE : KRXVH

Similarly,

For, ROOM : ?

Hence, the correct answer is “Option 1”.

Logic:

Second number = (First number)² + 1

Third number = Second number + 21

(1): (14, 197, 218)

(14)² + 1 = 196 + 1 = 197

197 + 21 = 218

(2): (16, 257, 278)

(16)2 + 1 = 256 + 1 = 257

257 + 21 = 278

(3): (20, 401, 424)

(20)2 + 1 = 400 + 1 = 401

410 + 21 = 422 ≠ 424

(4): (18, 325, 346)

(18)2 + 1 = 324 + 1 = 325

325 + 21 = 346

Hence, the correct answer is “Option 3”.

BODMAS Table: 

Given expression: 144 % 12 @ 7 * 25 # 19

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Now, replacing the symbols:

⇒ 144 ÷ 12 × 7 + 25 - 19

⇒ 144 ÷ 12 × 7 + 25 - 19

⇒ 12 × 7 + 25 - 19

⇒ 84 + 25 - 19

⇒ 84 + 25 - 19

⇒ 109 - 19

⇒ 90.

Hence, the correct answer is "Option 2".

Pattern: (First Number × 4) - 7 = Second Number.

11 : 37 → 

(11 × 4) - 7 = 44 - 7 = 37

Similarly,

15 : ? → 

(15 × 4) - 7 = 60 - 7 = 53

Hence, the correct answer is “Option 3”.

Pattern: (First Number + 3)² - 63 = Second Number.

30 : 1026 → 

(30 + 3)² - 63 = (33)² - 63 = 1089 - 63 = 1026

Similarly,

34 : ? → 

(34 + 3)2 - 63 = (37)2 - 63 = 1369 - 63 = 1306

Hence, the correct answer is “Option 1”.

Here,

144, 248, 422 are Even numbers.

While,

189 is a odd number.

Hence, the correct answer is “Option 2”.

Here,

Watercolor, Acrylic, and Tempera are types of paints defined by their specific binders (gum arabic, acrylic polymer, and egg yolk, respectively). They are portable and can be applied to various surfaces like paper, canvas, or wood.

While,

Fresco is a mural painting technique where pigment is applied directly into freshly laid wet lime plaster. It is an architectural method integrated into a wall or ceiling rather than a standalone paint type.

Hence, the correct answer is “Option 4”.

Logic: Sum of positional values - 4

For the word PUMP:

Total Sum = 16 + 21 + 13 + 16 = 66

Code = 66 - 4 = 62

For the word CAR:

Total Sum = 3 + 1 + 18 = 22

Code = 22 - 4 = 18

Applying the same logic to the word CAMP:

Total Sum = 3 + 1 + 13 + 16 = 33

Code = 33 - 4 = 29

Hence, the correct answer is “Option 3”.

The logic followed here is :

A "Kitten" is the young one of a "Cat".

Similarly,

A "Foal" is the young one of a "Horse".

Hence, the correct answer is "option (1)".

Additional Information 

Pattern followed here is,

Similarly,

Hence, the correct answer is “Option 4”.

Rectangles in the given figure,

There are 15 rectangles present in the given figure.

Hence, the correct answer is “Option 4”.

Triangles in the given figure,

There are 11 triangles present in the given figure.

Hence, the correct answer is “Option 1”.

In the given designs,

2 is common on both dices.

So, remaining are opposite to each other.

3 ⇔ 1

6 ⇔ 4

Now, 5 is adjacent to 3, 6, 4 and 1.

Only remaining face is 2.

Therefore, 5 is opposite to 2.

Hence, the correct answer is “Option 1”.

When open dice is closed,

Opposite faces are,

$ ⇔ ^

@ ⇔ !

& ⇔ *

Therefore, correct pair from options is "* and &".

Hence, the correct answer is “Option 2”.

Mirror image of the given figure is,

Hence, the correct answer is “Option 1”.

Family Chart:

Decoding the Symbols:

 

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Given: L − M + N × O → L is the sister of M, M is the son of N, N is the wife of O.

O is the father of L.

Therefore, the correct answer is "Option 1".

Given:

Total Income = ₹50,000

Rent = 40%

Groceries = 30%

Formula used:

Transport % = 100% − (Rent % + Groceries %)

Amount = (Percentage / 100) × Total Income

Total percentage spent on Rent and Groceries = 40% + 30% = 70%

⇒ Percentage spent on Transport = 100% − 70% = 30%

⇒ Expenditure on Transport = (30 / 100) × 50,000

⇒ Expenditure on Transport = 30 × 500

⇒ Expenditure on Transport = 15,000

Hence, the correct answer is “Option 3”.

Logic followed here is,

1 × 2 = 2

2 × 3 = 6

3 × 4 = 12

4 × 5 = 20

5 × 6 = 30

6 × 7 = 42

Hence, the correct answer is “Option 2”.

Logic followed here is,

1 × 2 = 2

2 × 3 = 6

6 × 4 = 24

24 × 5 = 120

Hence, the correct answer is “Option 1”.

Given:

 

Total Salary = ₹50,000

Rent Expenditure = 20%

Groceries Expenditure = 15%

Transport Expenditure = 10%

Formula used:

Savings = Total Salary × (100% − Total Expenditure %)

Calculations:

⇒ Total Expenditure % = 20% + 15% + 10% = 45%

⇒ Savings % = 100% − 45% = 55%

⇒ Savings Amount = 50,000 × (55 / 100)

⇒ Savings Amount = 500 × 55 = 27,500

Hence, the correct answer is “Option 3”.

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Pattern followed here is,

Hence, the correct answer is “Option 1”.

Given equation: 9 * 6 * 2 * 3 * 20 * 44

Let's check each option one by one:

Option 1) ×, −, ÷, +, =

Equation: 9 × 6 − 2 ÷ 3 + 20 = 44

⇒ 9 × 6 − 2 ÷ 3 + 20 = 44

⇒ 54 − 0.67 + 20 = 44

⇒ 54 − 0.67 + 20

⇒ 73.33 ≠ 44

Since 73.33 ≠ 44, this option is incorrect.

Option 2) ×, ÷, −, +, =

Equation: 9 × 6 ÷ 2 − 3 + 20 = 44

⇒ 9 × 6 ÷ 2 − 3 + 20 = 44

⇒ 54 ÷ 2 − 3 + 20 = 44

⇒ 27 − 3 + 20 = 44

⇒ 27 − 3 + 20 = 44

⇒ 24 + 20 = 44

⇒ 24 + 20 = 44

⇒ 44 = 44 (LHS = RHS)

Since 44 = 44, this option is correct.

Option 3) +, ×, ÷, −, =

Equation: 9 + 6 × 2 ÷ 3 − 20 = 44

⇒ 9 + 6 × 2 ÷ 3 − 20 = 44

⇒ 9 + 12 ÷ 3 − 20 = 44

⇒ 9 + 4 − 20 = 44

⇒ 9 + 4 − 20 = 44

⇒ 13 − 20 = 44

⇒ -7 ≠ 44

Since -7 ≠ 44, this option is incorrect.

Option 4) ÷, ×, +, −, =

Equation: 9 ÷ 6 × 2 + 3 − 20 = 44

⇒ 9 ÷ 6 × 2 + 3 − 20 = 44

⇒ 1.5 × 2 + 3 − 20 = 44

⇒ 3 + 3 − 20 = 44

⇒ 3 + 3 − 20 = 44

⇒ 6 − 20 = 44

⇒ -14 ≠ 44

Since -14 ≠ 44, this option is incorrect.

Hence, the correct answer is "Option 2".

Given: A_EPA_EPAG

(1) TPTP → TAPE/ PATE/ PAGP (Does not repeat any pattern)

(2) PGPA → PAGE/ PAPE/ PAGA (Does not repeat any pattern)

(3) GEGE → GAEE/ PAGE/ PAGE (Does not repeat any pattern)

(4) PGGE → PAGE/ PAGE/ PAGE (Repeat pattern "PAGE")

Hence, the correct answer is “Option 4”.

Given: JK_MJ_LM_KL_

(1) L, K, M, J → JKLM/ JKLM/ MKLJ (Does not repeat any pattern)

(2) M, J, K, L → JKMM/ JJLM/ LKLL(Does not repeat any pattern)

(3) L, K, J, M → JKLM/ JKLM/ JKLM (Repeat the pattern "JKLM")

(4) M, J, L, K → JKMM/ JJLM/ LKLK ((Does not repeat any pattern)

Hence, the correct answer is “Option 3”.

Pattern followed here is,

• Rotation: Figure A is rotated 45° clockwise to get the structure orientation of Figure B.
• ​The vertical central line with the solid dot on top and the curved arc at the bottom becomes the diagonal running from bottom-left to top-right. The solid circle and the curve swap ends (the circle moves to the bottom-left, the curve moves to the top-right).
• The horizontal wavy line with the two half-filled semicircles changes as well. In Figure A, the left semicircle is shaded on top, and the right semicircle is unshaded on top. In Figure B, they invert or shift along the line.

Similarly,

Hence, the correct answer is “Option 2”.

Shortcut Trick

Wage of leaving worker = Old Average + (Remaining Workers × Decrease in Average)

Wage = 250 + (7 × (250 − 240))

Wage = 250 + (7 × 10) = ₹320

∴ The correct answer is ₹320.

Alternate Method

Given: Average daily wage of 8 workers = ₹250. Average daily wage of 7 workers = ₹240.

Formula Used: Total Sum = Average × Number of observations

⇒ Total wage of 8 workers = 8 × 250 = ₹2000 ⇒ Total wage of 7 workers (remaining) = 7 × 240 = ₹1680 ⇒ Wage of worker who left = Total wage of 8 workers − Total wage of 7 workers ⇒ Wage = 2000 − 1680 ⇒ Wage = ₹320

∴ The correct answer is ₹320.

Additional Information

Average Definition

Average is the sum of all observations divided by the total number of observations. (Average = Sum ÷ n)

Exclusion Rule

If the average decreases when a person leaves, it means the person's value was greater than the initial average. If the average increases, the person's value was lower than the initial average.

Sum Formula

To find the total amount when average and count are known: Sum = Average × Count.

Shortcut Trick

Remaining value after 20% discount = 80% of 500 = ₹400.

Further reduction of ₹20 from the balance = 400 − 20 = ₹380.

∴ The correct answer is ₹380.

Alternate Method

Given:

Marked Price (MP) = ₹500

First Discount = 20%

Second Reduction = ₹20

Formula Used:

Price after % discount = MP × (100 − Discount%)/100

Final Selling Price = Price after % discount − Flat Reduction

Calculations:

⇒ Discount amount = 20% of 500 = (20/100) × 500 = ₹100

⇒ Price after first discount = 500 − 100 = ₹400

⇒ Final Selling Price = 400 − 20 = ₹380

∴ The correct answer is ₹380.

Additional Information

Successive Discounts

When two successive discounts d₁% and d₂% are given, the single equivalent discount is (d₁ + d₂ − (d₁ × d₂)/100)%.

Marked Price (MP)

The price printed on the label of an article is called the Marked Price or List Price. Discounts are always calculated on the MP.

Selling Price (SP) Formula

SP = MP − Discount. If profit occurs, SP = Cost Price (CP) + Profit; if loss occurs, SP = CP − Loss.

Shortcut Trick

The radius of a circle is calculated by dividing the circumference by 2π.

Given Circumference = 31.4 cm and π = 3.14.

Radius (r) = 31.4 ÷ (2 × 3.14)

r = 31.4 ÷ 6.28 = 5 cm.

∴ The correct answer is 5 cm.

Alternate Method

Given:

Circumference of the circle (C) = 31.4 cm

Value of Pi (π) = 3.14

Formula Used:

Circumference of a circle = 2πr

Where 'r' is the radius of the circle.

Calculations:

⇒ 31.4 = 2 × 3.14 × r

⇒ 31.4 = 6.28 × r

⇒ r = 31.4 ÷ 6.28

⇒ r = 5 cm

∴ The correct answer is 5 cm.

Additional Information

Area of a Circle

The total space enclosed within the boundary of a circle is given by Area = πr².

Diameter of a Circle

The diameter is the longest chord of a circle and is exactly twice the radius (d = 2r).

Perimeter of a Semicircle

The boundary length of a half-circle including the diameter is calculated as (πr + 2r).

Shortcut Trick

Convert the failure marks into a percentage of the total marks.

Failure % = (50 ÷ 500) × 100 = 10%.

Passing % = Scored % + Failure %.

Passing % = 30% + 10% = 40%.

∴ The correct answer is 40%.

Alternate Method

Given:

Total Marks = 500

Scored Percentage = 30%

Failing Marks = 50

Formula Used:

Passing Marks = Marks Obtained + Failing Marks

Passing Percentage = (Passing Marks ÷ Total Marks) × 100

Calculations:

⇒ Marks Scored = 30% of 500

⇒ Marks Scored = (30 ÷ 100) × 500 = 150

⇒ Required Passing Marks = 150 + 50 = 200

⇒ Passing Percentage = (200 ÷ 500) × 100

⇒ Passing Percentage = (2 ÷ 5) × 100 = 40%

∴ The correct answer is 40%.

Additional Information

Passing Criteria

Passing Marks = Marks Obtained + Failing Marks. If a student passes by extra marks, then Passing Marks = Marks Obtained − Extra Marks.

Percentage Calculation

To find what percentage X is of Y, use the formula: (X ÷ Y) × 100. In this case, (Passing Marks ÷ Total Marks) × 100.

Total Marks Formula

If the difference in percentages and the difference in marks are known, Total Marks = (Difference in Marks × 100) ÷ Difference in Percentages.

Shortcut Trick

At a 20% loss, the Selling Price (SP) is 80% of the Cost Price (CP).

SP = 80% × 400

SP = 0.8 × 400 = 320

∴ The correct answer is ₹320.

Alternate Method

Given: Cost Price (CP) = ₹400, Loss Percentage = 20%

Formula Used: Selling Price (SP) = CP − (Loss% × CP / 100)

⇒ Cost Price (CP) = ₹400

⇒ Loss Percentage = 20%

⇒ Loss Amount = (20/100) × 400 = ₹80

⇒ Selling Price (SP) = CP − Loss

⇒ SP = 400 − 80 = 320

∴ The correct answer is ₹320.

Additional Information

Profit and Loss Percentage

Profit = SP − CP and Loss = CP − SP. Both percentages are always calculated on the Cost Price (CP) unless stated otherwise.

Direct Calculation of Selling Price

For profit, SP = CP × (100 + P%)/100. For loss, SP = CP × (100 − L%)/100.

Marked Price and Discount

Discount is always allowed on the Marked Price (MP). SP = MP − Discount.

Shortcut Trick

Total ratio parts = 2 + 7 = 9 units

Total savings given = ₹180

9 units = ₹180 → 1 unit = ₹20

A's savings (2 units) = 2 × 20 = ₹40

∴ The correct answer is ₹40.

Alternate Method

Given:

Ratio of monthly savings of A and B = 2 : 7

Total savings of A and B = ₹180

Let the monthly savings of A and B be 2x and 7x respectively.

⇒ Total savings = 2x + 7x = 180

⇒ 9x = 180

⇒ x = 180 ÷ 9

⇒ x = 20

⇒ A's savings = 2x = 2 × 20 = 40

∴ The correct answer is ₹40.

Additional Information

Ratio Division Rule

To divide a quantity 'S' in the ratio a:b, the first part is (a / (a+b)) × S and the second part is (b / (a+b)) × S.

Compound Ratio

The compound ratio of a:b and c:d is calculated as (a × c) : (b × d).

Inverse Ratio

The inverse ratio of a:b is b:a, which is obtained by swapping the antecedent and the consequent.

Shortcut Trick

Total Interest Percentage = Rate × Time = 8% × 4 = 32%

Given that 32% of Principal = ₹184

1% of Principal = 184 ÷ 32 = 5.75

100% (Principal) = 5.75 × 100 = ₹575

∴ The correct answer is ₹575.

Alternate Method

Given:

Simple Interest (SI) = ₹184

Rate (R) = 8% p.a.

Time (T) = 4 years

Formula Used:

SI = (P × R × T) ÷ 100

Calculations:

⇒ 184 = (P × 8 × 4) ÷ 100

⇒ 184 = (P × 32) ÷ 100

⇒ 184 × 100 = 32P

⇒ 18400 = 32P

⇒ P = 18400 ÷ 32

⇒ P = 575

∴ The correct answer is ₹575.

Additional Information

Total Amount Formula

The total amount (A) is the sum of the principal and interest: A = P + SI = P(1 + (R × T) ÷ 100).

Finding the Rate of Interest

To calculate the annual rate when other variables are known: R = (SI × 100) ÷ (P × T).

Difference between SI and CI

Simple Interest remains constant every year because it is only calculated on the Principal, unlike Compound Interest which includes interest on interest.

Shortcut Trick

Downstream Speed = 24 ÷ 2 = 12 km/h

Upstream Speed = 8 ÷ 2 = 4 km/h

Stream Speed = (Downstream − Upstream) ÷ 2

Stream Speed = (12 − 4) ÷ 2 = 4 km/h

∴ The correct answer is 4 km/h.

Alternate Method

Given:

Downstream Distance = 24 km, Time = 2 hours

Upstream Distance = 8 km, Time = 2 hours

Formula Used:

Speed = Distance ÷ Time

Speed of Stream (y) = (u − v) ÷ 2, where u = Downstream speed and v = Upstream speed.

⇒ Downstream Speed (u) = 24 ÷ 2 = 12 km/h

⇒ Upstream Speed (v) = 8 ÷ 2 = 4 km/h

⇒ Let the Speed of Boat in Still Water be x and Speed of Stream be y.

⇒ x + y = 12

⇒ x − y = 4

⇒ Subtracting the equations: (x + y) − (x − y) = 12 − 4

⇒ 2y = 8

⇒ y = 4 km/h

∴ The correct answer is 4 km/h.

Additional Information

Speed of Boat in Still Water

It is the average of downstream and upstream speeds: x = (u + v) ÷ 2.

Relative Speed Concept

Downstream speed is always greater than upstream speed because the Stream aids the motion.

Speed Ratios

If the time taken to travel the same distance downstream and upstream is t₁ and t₂, then (x/y) = (t₂ + t₁) ÷ (t₂ − t₁).

Shortcut Trick

Ratio of Sides (Initial : New) = 1 : 2

Ratio of Areas = (Initial Side)² : (New Side)²

Ratio of Areas = 1² : 2² = 1 : 4

New Area is 4 times the initial area, which represents 400% of the original value.

∴ The correct answer is 400%.

Alternate Method

Given:

Initial side of the square = s

New side of the square = 2s (doubled)

Formula Used:

Area of square = (side)²

Percentage = (New Value / Original Value) × 100

Calculations:

⇒ Initial Area (A₁) = s²

⇒ New Area (A₂) = (2s)² = 4s²

⇒ Area calculation in percentage = (A₂ / A₁) × 100

⇒ (4s² / s²) × 100

⇒ 4 × 100 = 400%

∴ The correct answer is 400%.

Additional Information

Area and Perimeter of a Square

For a square with side 'a', the Area = a² and the Perimeter = 4a.

Scaling Effect on Area

If the linear dimensions of a 2D shape are multiplied by a factor 'k', the Area is multiplied by k².

Successive Percentage Change

The change in area can also be calculated using the successive percentage formula: x + y + (xy/100), where x and y are the percentage changes in the dimensions.

Diagonal of a Square

The length of the Diagonal = a√2. If the side is doubled, the diagonal also doubles.

Shortcut Trick

Total Area = Number of rooftops × (1/2 × Base × Height)

Total Area = 4 × (1/2 × 10 × 6)

Total Area = 4 × 30 = 120

∴ The correct answer is 120 cm².

Alternate Method

Given:

Base of the triangular rooftop (b) = 10 m

Height of the triangular rooftop (h) = 6 m

Number of identical rooftops (n) = 4

Formula Used:

Area of a Triangle = 1/2 × base × height

Calculations:

⇒ Area of one triangular rooftop = 1/2 × 10 × 6

⇒ Area of one triangular rooftop = 5 × 6 = 30 m²

⇒ Total area of 4 such identical rooftops = 4 × 30

⇒ Total area = 120

∴ The correct answer is 120 cm².

Additional Information

Area of Equilateral Triangle

If all sides of the triangular rooftop are equal (side 'a'), Area = (√3/4) × a².

Heron's Formula

For a triangle with sides a, b, and c: Area = √[s(s−a)(s−b)(s−c)], where s = (a+b+c)/2.

Right-Angled Triangle

In a right-angled triangle, the base and height are the two sides forming the 90° angle.

Shortcut Trick

Total Work (LCM of 10, 15, 30) = 30 units.

Efficiency: A = 3, B = 2, C = 1.

Work done by A in 2 days = 3 × 2 = 6 units.

Remaining work = 30 − 6 = 24 units.

Days taken by B and C = 24 ÷ (2 + 1) = 8 days.

∴ The correct answer is 8 days.

Alternate Method

Given:

Time taken by A = 10 days

Time taken by B = 15 days

Time taken by C = 30 days

Calculations:

⇒ Total Work = LCM(10, 15, 30) = 30 units.

⇒ Work done by A alone for 2 days = 3 × 2 = 6 units.

⇒ Remaining Work = Total Work − Work by A = 30 − 6 = 24 units.

⇒ Combined Efficiency of B and C = 2 + 1 = 3 units/day.

⇒ Time taken by B and C = Remaining Work ÷ Efficiency of (B + C)

⇒ Time taken = 24 ÷ 3 = 8 days.

∴ The correct answer is 8 days.

Additional Information

Total Work and Efficiency

Total Work = Efficiency × Time. Efficiency is inversely proportional to the time taken to complete the work.

Pipes and Cisterns

Similar to time and work, but inlet pipes have positive efficiency and outlet (leak) pipes have negative efficiency.

Work and Wages

Wages are generally distributed in the ratio of the work done by each individual, which is the product of efficiency and time worked.

Alternate Day Work

For work done on alternate days, calculate the work done in one complete cycle (e.g., 2 days or 3 days) and then find the total cycles required.

Shortcut Trick

Check for Pythagorean triplet: 15² + 20² = 225 + 400 = 625 = 25².

Since it is a right-angled triangle, the inradius (r) is given by the formula:

r = (Base + Perpendicular − Hypotenuse) ÷ 2

⇒ r = (15 + 20 − 25) ÷ 2

⇒ r = 10 ÷ 2 = 5 m.

∴ The correct answer is 5 m.

Alternate Method

Given: Sides of the triangular plot are a = 15 m, b = 20 m, and c = 25 m.

Formula Used:

1. Semi-perimeter (s) = (a + b + c) ÷ 2
2. Area (A) = √[s(s − a)(s − b)(s − c)]
3. Inradius (r) = Area ÷ Semi-perimeter

⇒ Semi-perimeter (s) = (15 + 20 + 25) ÷ 2 = 60 ÷ 2 = 30 m

⇒ Area (A) = √[30 × (30 − 15) × (30 − 20) × (30 − 25)]

⇒ Area (A) = √[30 × 15 × 10 × 5]

⇒ Area (A) = √[22500] = 150 m²

⇒ Inradius (r) = 150 ÷ 30

⇒ r = 5 m

∴ The correct answer is 5 m.

Additional Information

Inradius Property

For any triangle, the inradius is the ratio of the area of the triangle to its semi-perimeter (r = A/s).

Circumradius of Right Triangle

The circumradius (R) of a right-angled triangle is exactly half of the hypotenuse (R = c/2).

Right Triangle Inradius Shortcut

For a triangle with legs p, b and hypotenuse h, the inradius is r = (p + b − h) ÷ 2.

Shortcut Trick

Equate Volume to formula: (4/3) π r³ = 12π

Cancel π and solve for r³: r³ = (12 × 3) ÷ 4 = 9

Since 2³ = 8 and 3³ = 27, radius r = ³√9 ≈ 2.08 cm

∴ The correct answer is 2.08 cm.

Alternate Method

Given:

Volume of the Sphere (V) = 12π cm³

Formula Used:

Volume of a Sphere = (4/3) π r³

Calculations:

⇒ 12π = (4/3) × π × r³

⇒ 12 = (4/3) × r³

⇒ r³ = (12 × 3) ÷ 4

⇒ r³ = 3 × 3

⇒ r³ = 9

⇒ r = ³√9

⇒ r ≈ 2.08 cm

∴ The correct answer is 2.08 cm.

Additional Information

Surface Area of a Sphere

The total surface area is given by the formula 4πr².

Volume of a Hemisphere

A hemisphere is half of a sphere, and its volume is (2/3)πr³.

Surface Area of a Hemisphere

Curved Surface Area = 2πr² and Total Surface Area = 3πr².

Relation between Radius and Volume

If the radius is doubled, the volume becomes 2³ = 8 times the original volume.

Shortcut Trick

For an equation 3A = 6B = 9C, the ratio A : B : C is the inverse of their coefficients.

Find the LCM of 3, 6, and 9, which is 18.

Divide the LCM by each coefficient: A = 18/3 = 6, B = 18/6 = 3, C = 18/9 = 2.

The resulting ratio is 6 : 3 : 2.

∴ The correct answer is 6 : 3 : 2.

Alternate Method

Given: 3A = 6B = 9C

Formula: If mA = nB = pC, then A : B : C = (1/m) : (1/n) : (1/p)

⇒ Let 3A = 6B = 9C = k

⇒ A = k/3, B = k/6, C = k/9

⇒ A : B : C = (k/3) : (k/6) : (k/9)

⇒ A : B : C = 1/3 : 1/6 : 1/9

⇒ Multiply by LCM(3, 6, 9) = 18 to remove fractions:

⇒ A : B : C = (1/3 × 18) : (1/6 × 18) : (1/9 × 18)

⇒ A : B : C = 6 : 3 : 2

∴ The correct answer is 6 : 3 : 2.

Additional Information

Inverse Proportion

When values are equated like mA = nB, the variables are in inverse proportion to their coefficients, meaning A/B = n/m.

Ratio Scaling

A ratio remains unchanged if all its terms are multiplied or divided by the same non-zero constant (like the LCM used above).

Compound Ratio

The compound ratio of (a : b) and (c : d) is (ac : bd), used when multiple proportionalities interact.

Shortcut Trick

Speed of runner = 450 ÷ 90 = 5 m/s.

Speed of cyclist = 5 × 150% = 7.5 m/s.

Required time = 180 ÷ 7.5 = 24 sec.

∴ The correct answer is 24 sec.

Alternate Method

Given:

Distance covered by runner = 450 m

Time taken by runner = 90 sec

Distance to be covered by cyclist = 180 m

Formula Used:

Speed = Distance ÷ Time

Time = Distance ÷ Speed

Calculations:

⇒ Speed of the runner = 450 ÷ 90 = 5 m/s

⇒ Speed of the cyclist = 150% of 5 = (150/100) × 5

⇒ Speed of the cyclist = 1.5 × 5 = 7.5 m/s

⇒ Time taken by the cyclist for 180 m = 180 ÷ 7.5

⇒ Time = 1800 ÷ 75 = 24 sec

∴ The correct answer is 24 sec.

Additional Information

Unit Conversion

To convert km/hr to m/s, multiply by 5/18. To convert m/s to km/hr, multiply by 18/5.

Relative Speed

When two objects move in the same direction, relative speed is (S₁ − S₂). In opposite directions, it is (S₁ + S₂).

Average Speed

Average speed = (Total Distance) ÷ (Total Time). For two equal distances at speeds x and y, it is 2xy ÷ (x + y).

The correct answer is 'Real Time Gross Settlement'

Key Points

• Real Time Gross Settlement (RTGS):
• RTGS is a continuous process of settling payments on an individual order-by-order basis without netting debits with credits across the books of a central bank.
• Real Time: This implies that the processing of instructions happens at the same time they are received rather than at a later time or in batches.
• Gross Settlement: This means the settlement of funds transfer instructions occurs individually. Since the settlement takes place in the books of the central bank (such as the Reserve Bank of India), the payments are final and irrevocable.
• RTGS is primarily used for high-value transactions that require immediate clearing and settlement to ensure financial stability and reduce systemic risk.
• It is a safe and secure system for funds transfer, as it is managed and operated by the country's central banking authority.

Additional Information

• Rapid Transfer of Government Savings:
• This is an incorrect term and does not represent any standard financial or banking protocol. While governments do have systems for managing savings and transfers, they do not operate under this specific acronym or nomenclature.
• Regular Transaction Gateway System:
• This is a fictional term. While "Payment Gateways" exist to facilitate online transactions between merchants and customers, they are distinct from the "Settlement Systems" like RTGS that handle the actual movement of money between banks.
• Real Time General Service:
• This is an incorrect expansion of the acronym. While RTGS provides a service in real-time, the word "General" does not capture the "Gross Settlement" nature of the transaction, which is the defining technical characteristic of the system.

Important Points

• In India, the RTGS system is managed by the Reserve Bank of India (RBI).
• The minimum amount to be remitted through RTGS is ₹2,00,000, with no upper ceiling for maximum transactions.
• Unlike NEFT (National Electronic Funds Transfer), which settles transactions in half-hourly batches, RTGS settles transactions individually and instantly throughout the day.
• With effect from December 2020, the RTGS system has been made available 24/7/365 in India, making it one of the few countries globally to operate such a system round the clock.
• RTGS transactions use the IFSC (Indian Financial System Code) to identify the specific bank branch where the beneficiary holds an account.

The correct answer is Dogpile

Key Points

• A meta-search engine is an information retrieval tool that does not maintain its own database or web crawler. Instead, it sends a user's query to multiple primary search engines and aggregates the results into a single, unified list.
• Dogpile is a classic example of a meta-search engine. It functions by fetching and combining results from major engines like Google, Yahoo, and Bing to provide a more comprehensive set of links than any single engine might provide alone.
• Google and Bing are categorized as primary search engines because they use their own proprietary algorithms and crawlers (such as Googlebot) to index the web and build their own searchable databases.
• Yahoo currently functions as a web portal and search engine that primarily relies on Bing for its search results, but it is not considered a meta-search engine in the same category as Dogpile.

Additional Information

• Other notable examples of meta-search engines include MetaCrawler, Excite, Mama, and SurfWax.
• The main advantage of a meta-search engine is efficiency; it allows users to see a broader range of results from different sources simultaneously without having to visit each search engine individually.
• Meta-search engines are particularly effective for obscure queries or when a user wants to compare how different algorithms rank the same information.
• Some modern privacy-focused tools like DuckDuckGo also utilize meta-search techniques by pulling data from hundreds of individual sources to supplement their own results.

The correct answer is A grid-based program used to organize, calculate and analyze data in rows and columns

Key Points

• MS Excel is a spreadsheet application developed by Microsoft that is part of the MS Office suite.
• The fundamental purpose of a spreadsheet is to provide a grid-based environment where data can be systematically organized into rows and columns.
• Each individual box in this grid is called a Cell, which is the intersection of a row and a column.
• Excel allows users to perform mathematical calculations, statistical analysis, and data visualization using various formulas and functions.
• The other options are incorrect because drawing is the primary function of graphics software like MS Paint, sending emails is the function of email clients like MS Outlook, and playing media is the function of media players like VLC.

Additional Information

• An Excel file is technically called a Workbook, and it can contain multiple Worksheets (tabs).
• In a worksheet, Rows are identified by numbers (1, 2, 3...) and Columns are identified by letters (A, B, C...).
• The Cell Address is a combination of the column letter and row number (e.g., A1, C10).
• Modern versions of Excel support up to 1,048,576 rows and 16,384 columns per worksheet.
• Key features of Excel include Pivot Tables, VLOOKUP, Data Validation, and Macros for automation.

The correct answer is To send and receive messages

Key Points

• Electronic mail, commonly known as email, is a method of exchanging digital messages between people using electronic devices such as computers, smartphones, and tablets.
• The primary purpose of email is to facilitate communication by allowing users to send and receive messages over the internet or a local area network.
• Option 2 is incorrect because internet browsing is the primary function of web browsers like Google Chrome, Mozilla Firefox, or Microsoft Edge.
• Option 3 is incorrect because while emails can be archived, permanent data storage is the primary function of hard drives, cloud storage services, and databases.
• Option 4 is incorrect because social media usage refers to platforms like Facebook, Instagram, or LinkedIn, which are distinct from the direct messaging architecture of email.

Additional Information

• The first email was sent by Ray Tomlinson in 1971. He is also responsible for introducing the @ symbol to separate the user name from the destination server.
• Email operates based on specific protocols: SMTP (Simple Mail Transfer Protocol) is used for sending emails, while POP3 (Post Office Protocol) or IMAP (Internet Message Access Protocol) are used for receiving and managing emails.
• Modern email services often include spam filters to block unsolicited messages and encryption to ensure the privacy and security of the communication.
• An email address typically consists of three parts: the username, the @ symbol, and the domain name (e.g., [email protected]).