General Awareness PYQs

The correct answer is Chambal.

Key Points

• The Chambal River, a major tributary of the Yamuna River, is globally famous for its unique badland topography, which consists of an extensive and intricate network of ravines.
• This rugged landscape is primarily the result of severe gully erosion, a process where rainwater carves deep, narrow channels into the soft, alluvial soil of the Chambal Basin.
• These ravines, locally known as Beehad, span across the states of Madhya Pradesh, Rajasthan, and Uttar Pradesh, particularly concentrated in the districts of Morena, Bhind, and Dholpur.
• The badland topography makes the terrain largely unsuitable for agriculture due to the high degree of soil displacement and the lack of flat surfaces for cultivation.
• Geologically, the region is characterized by thick alluvium deposits from the Quaternary period, which are highly susceptible to erosion under the semi-arid climatic conditions of the area.

 Additional Information

• Ken River:
• A significant river in the Bundelkhand region, it is a tributary of the Yamuna.
• It is famous for the Ken-Betwa River Link Project and flows through the Panna Tiger Reserve in Madhya Pradesh.
• Gandak River:
• Formed by the union of the Kali and Trishuli rivers in Nepal, it is a major northern tributary of the Ganga.
• It serves as an important source of irrigation and hydroelectricity for the states of Bihar and Uttar Pradesh.
• Ramganga River:
• Originates in the Dudhatoli range of Uttarakhand and is the first major tributary to join the Ganga from the left.
• The river is central to the ecosystem of the Jim Corbett National Park, providing water to its diverse flora and fauna.

The correct answer is Increased significantly.

Key Points

• The implementation of the New Economic Policy (NEP) in 1991 marked a decisive shift from a state-controlled, inward-looking economy to a liberalized, market-oriented system.
• Prior to these reforms, the Indian economy was characterized by the Hindu Rate of Growth, which stagnated around 3.5% to 4% from the 1950s through the 1980s.
• Post-reform data demonstrates that the Gross Domestic Product (GDP) growth rate surged, averaging nearly 6.5% in the 1990s and climbing to peaks of 8% to 9% during the mid-2000s.
• The abolition of the License-Permit Raj removed industrial bottlenecks, allowing private enterprises to expand rapidly and enhancing overall economic productivity.
• Increased Global Integration and the reduction of trade barriers allowed India to transition from a sluggish agrarian-focused economy to one of the fastest-growing major economies in the world.

 Additional Information

• Balance of Payments (BoP) Crisis:
• The reforms were necessitated by a severe crisis in 1991 where foreign exchange reserves fell to approximately $1.2 billion, barely enough for two weeks of essential imports.
• Architects of Reform:
• The policy shift was spearheaded by the then Prime Minister **P.

V. Narasimha Rao** and Finance Minister Dr. Manmohan Singh under the guidance of the IMF and World Bank.

• Sectoral Growth:
• Service Sector: Post-1991, this sector became the primary engine of growth, specifically in Information Technology (IT) and Telecommunications, now contributing over 50% to India's GDP.
• Foreign Direct Investment (FDI): Reforms opened various sectors to foreign capital, leading to a massive influx of investment and modern technology.
• Industrial Policy 1991:
• This policy drastically reduced the number of industries reserved for the Public Sector and introduced Disinvestment to improve the efficiency of PSUs$.

The correct answer is Odisha.

Key Points

• Rangabati is widely celebrated as the most popular folk song and dance form originating from the Western Odisha region, particularly associated with the Sambalpur district.
• The dance is a vital expression of the Sambalpuri culture and is performed in the Kosli language, reflecting the vibrant tribal and rural heritage of the state.
• The song Rangabati gained nationwide and international acclaim after it was first recorded in 1975 for All India Radio; it was written by Mitrabhanu Gauntia and composed by Prabhudutta Pradhan.
• The lead singers who immortalized this folk piece are Jitendra Haripal and Krishna Patel, who were later honored with the Padma Shri and other state awards for their contribution to Odishi folk music.
• The dance is characterized by its infectious rhythm and is traditionally accompanied by local musical instruments such as the Dhol (drum), Nishan (kettle drum), Tasa (one-sided drum), and Mahuri (wind instrument).
• Performers usually wear traditional Sambalpuri Handloom attire, with women draping the Sambalpuri Saree in a specific way that allows for the energetic and graceful footwork required by the folk form.
• It is predominantly performed during major cultural and agricultural festivals like Nuakhai, which is the most important festival in Western Odisha celebrating the new harvest.

 Additional Information

• Gujarat:
• Garba: A rhythmic folk dance performed in a circle around a central lamp, traditionally during the Navratri festival.
• Dandiya Raas: A high-energy dance involving the use of polished sticks, symbolizing the battle between Goddess Durga and the demon Mahishasura.
• Uttar Pradesh:
• Kathak: One of the eight Classical Dances of India, known for its intricate footwork (Tatkar) and dramatic storytelling.
• Charkula: A folk dance from the Braj region where women balance large multi-tiered wooden pyramids with burning oil lamps on their heads.
• West Bengal:
• Chhau Dance: Specifically the Purulia Chhau, which is a tribal martial dance characterized by the use of large, elaborate masks and acrobatic movements.
• Gambhira: A traditional solo or group folk dance-drama performed during the Gajan festival, often used for social and political commentary.

The correct answer is a compositional lyric form.

Key Points

• The term Kriti refers to the most highly evolved and predominant compositional lyric form in Carnatic classical music, forming the backbone of modern concert repertoires.
• A standard Kriti follows a tripartite structural arrangement consisting of the Pallavi (the thematic opening), the Anupallavi (the second section), and the Charanam (the final stanzas that conclude the piece).
• The evolution of the Kriti is credited largely to the Trinity of Carnatic Music—Tyagaraja, Muthuswami Dikshitar, and Syama Sastri—who refined the form in the late 18^th and early 19^th centuries.
• Unlike simpler devotional songs, a Kriti emphasizes musical technicality and raga bhava (the essence of the melody), where the Sahitya (lyrics) serves as a vehicle for complex melodic exploration.
• It is characterized by its fixed nature, where the Dhatu (musical setting) and Matu (lyrical content) are pre-composed, although performers often add improvisational elements like Niraval or Kalpanaswaras during its rendition.

 Additional Information

• Raga
• Defined as a melodic scale or framework that provides the basis for composition and improvisation in Indian music.
• It uses a specific set of notes (Swaras) and rules of ascent (Arohana) and descent (Avarohana).
• Tala
• Refers to the rhythmic pattern or time cycle that regulates the temporal aspect of a musical performance.
• Common examples include Adi Tala (8 beats) and Rupaka Tala (3 beats).
• Gamaka
• Represents a type of musical ornamentation involving the graceful manipulation of notes to provide aesthetic depth.
• It is a vital component that distinguishes the unique character of different Ragas.
• Varnam
• A foundational compositional form usually performed at the beginning of a concert to showcase the characteristic phrases of a Raga.

The correct answer is Exfoliation.

Key Points

• Exfoliation is a type of mechanical weathering or physical weathering process where the external layers of a rock peel away in thin, curved sheets or shells.
• This process is often referred to as onion-skin weathering because the rock flakes off in layers, similar to an onion.
• It is primarily caused by thermal expansion and contraction. Rocks are poor conductors of heat; therefore, intense solar heating during the day causes the outer layer to expand more than the interior. Cooling at night causes contraction, leading to differential stresses that fracture the rock parallel to the surface.
• Pressure release, also known as unloading, is another significant cause. When heavy overlying rock or ice is removed by erosion, the underlying massive rocks (such as granite) expand outward, creating joints that result in the peeling of large curved slabs.
• This phenomenon is most prevalent in arid and semi-arid environments where there are large diurnal temperature ranges, and in mountainous regions with high rates of denudation.

 Additional Information

• Carbonation
• A chemical weathering process where carbon dioxide from the atmosphere dissolves in rainwater to form weak carbonic acid.
• It reacts specifically with carbonate minerals like calcite found in limestone and marble, leading to the formation of calcium bicarbonate which is easily washed away.
• Salt Crystallisation
• A form of physical weathering common in coastal or desert regions.
• Saline water enters pore spaces or joints in rocks; upon evaporation, salt crystals grow and exert expansive force, eventually disintegrating the rock structure.
• Abrasion
• The mechanical scraping or wearing down of rock surfaces through friction.
• It is caused by the scouring action of particles (sand, pebbles) transported by wind, glaciers, or river currents hitting against stationary rock bodies.

The correct answer is Chandela.

Key Points

• The Khajuraho group of temples was constructed by the Chandela Dynasty, which reached its zenith between 950 AD and 1050 AD.
• Located in the Chhatarpur district of Madhya Pradesh, these temples are a UNESCO World Heritage Site recognized for their intricate Nagara-style architecture and erotic sculptures.
• The Chandela rulers, particularly Yashovarman and Dhanga, were the primary patrons; Yashovarman is credited with building the famous Lakshmana Temple.
• The most magnificent structure in the complex, the Kandariya Mahadeva Temple, was built during the reign of King Vidyadhara around 1030 AD.
• The temples are unique as they represent two different religions, Hinduism and Jainism, coexisting in the same complex, signifying the religious tolerance of the Chandela period.
• Most of the temples were built using sandstone with mortise and tenon joints, featuring high platforms (jagati) and towers (shikhara) that resemble mountain peaks.

 Additional Information

• Solanki Dynasty:
• Also known as the Chaulukyas of Gujarat, they ruled parts of western India between the 10^th and 13^th centuries.
• They are celebrated for constructing the Sun Temple at Modhera and the Rani ki Vav stepwell.
• Rashtrakuta Dynasty:
• A powerful dynasty that ruled the Deccan region from the 8^th to the 10^th century.
• They are most famous for the rock-cut Kailasa Temple at Ellora and the Elephanta Caves.
• Gahadavala Dynasty:
• A Rajput dynasty that governed the Kingdom of Kannauj (Kanyakubja) during the 11^th and 12^th centuries.
• They played a significant role in resisting Ghurid invasions under leaders like Jayachandra.

The correct answer is Tertiary.

Key Points

• The Tertiary sector is popularly known as the Service sector because it involves providing services to both consumers and businesses rather than producing physical goods.
• Activities in this sector, such as Transport, Trade, Storage, and Communication, act as a support system for the development of the Primary and Secondary sectors.
• In the Indian economy, the Tertiary sector has emerged as the largest contributing sector to the Gross Value Added (GVA), surpassing the industrial and agricultural sectors in recent decades.
• Other vital services included in this category are Banking, Insurance, Tourism, Education, and Healthcare, which are essential for a modern economy.

 Additional Information

• Primary Sector:
• Involves the direct extraction and use of natural resources from the earth.
• Key examples include Agriculture, Fishing, Mining, Forestry, and Dairy farming.
• It serves as the raw material base for all other economic activities.
• Secondary Sector:
• Focuses on the manufacturing and processing of raw materials into finished or semi-finished goods.
• Commonly referred to as the Industrial Sector, it includes Construction, Manufacturing, and Electricity generation.
• Examples include converting Sugarcane into Sugar or Cotton into Textiles.
• Quinary Sector:
• Representing the highest level of decision-making, it is a specialized sub-division of the service economy.
• It includes Top Government Officials, Senior Business Executives, and Research Scientists who focus on the creation and interpretation of new ideas.

The correct answer is Two Kerala Acts on land reforms.

Key Points

• The Twenty-Ninth Amendment Act, 1972 was specifically enacted to provide constitutional protection to certain land reform legislations passed by the Kerala State Legislature.
• The amendment included two specific acts in the Ninth Schedule of the Constitution: the Kerala Land Reforms (Amendment) Act, 1969 (Act 35 of 1969) and the Kerala Land Reforms (Amendment) Act, 1971 (Act 25 of 1971).
• By placing these acts in the Ninth Schedule, the government aimed to shield them from judicial scrutiny under Article 31B, preventing them from being declared void on the grounds of violating Fundamental Rights, particularly the then-existing right to property.
• The validity of this amendment, along with the 24^th and 25^th Amendments, was later challenged in the landmark Kesavananda Bharati v. State of Kerala (1973) case, which is famous for establishing the Basic Structure Doctrine of the Indian Constitution.
• The amendment was a response to the litigation faced by the state government while implementing radical land redistribution policies intended to abolish the intermediary system and set ceilings on land holdings.

 Additional Information

• Ninth Schedule:
• It was introduced by the First Amendment Act, 1951 to protect agrarian reform laws from being challenged in courts.
• While it initially offered absolute immunity, the Supreme Court in the I.R. Coelho case (2007) ruled that laws added after April 24, 1973, can be tested against the Basic Structure.
• Reservation in promotions:
• This concept is primarily associated with the 77^th Amendment Act, 1995, which inserted clause (4A) into Article 16, and the 85^th Amendment Act, 2001, concerning consequential seniority.
• Special provisions for Mizoram:
• Provisions for Mizoram were incorporated into the Constitution via the 53^rd Amendment Act, 1986, which added Article 371G to protect the religious and social practices of the Mizo people.
• Environmental protection laws:
• These were majorly emphasized during the 42^nd Amendment Act, 1976, which introduced Article 48A in the Directive Principles and Article 51A(g) in the Fundamental Duties.

The correct answer is For ALL Women and Girls: Rights. Equality. Empowerment.

Key Points

• International Women's Day (IWD) is a global event celebrated annually on March 8 to commemorate the social, economic, cultural, and political achievements of women.
• For the year 2025, the United Nations (UN) Women organization officially designated the theme as 'For ALL Women and Girls: Rights. Equality. Empowerment.'
• This theme is central to the Beijing+30 campaign, marking the 30^th anniversary of the Beijing Declaration and Platform for Action, which was adopted in 1995 at the Fourth World Conference on Women.
• The 2025 observance focuses on accelerating the progress toward Sustainable Development Goal 5 (SDG 5), which aims to achieve gender equality and empower all women and girls by 2030.
• The theme serves as a global rallying cry to dismantle systemic barriers, end violence against women, and ensure inclusive leadership across all sectors of society.

 Additional Information

• Previous International Women's Day Themes:
• Invest in Women: Accelerate Progress: This was the official UN theme for 2024, emphasizing the need for financial investment to tackle the gender poverty gap.
• DigitALL: Innovation and technology for gender equality: This theme for 2023 highlighted the importance of bridging the digital gender divide and protecting women in online spaces.
• Gender equality today for a sustainable tomorrow: The 2022 theme focused on the vital role of women in climate change adaptation and environmental conservation.
• Commission on the Status of Women (CSW):
• The 69^th session (CSW69) held in March 2025 at the UN Headquarters in New York serves as the primary venue for the comprehensive review of the Beijing Declaration.

The correct answer is Article 26.

Key Points

• Article 26 of the Indian Constitution specifically provides the freedom to manage religious affairs, which is a fundamental right guaranteed to every religious denomination or any section thereof.
• The article empowers these groups to establish and maintain institutions for both religious and charitable purposes, ensuring communal autonomy.
• It grants the specific authority to manage their own affairs in matters of religion, protecting the rituals, ceremonies, and internal practices essential to their faith.
• Under this article, denominations have the legal right to own and acquire movable and immovable property, providing the financial and physical infrastructure needed for religious activities.
• Furthermore, it safeguards the right of these groups to administer such property in accordance with the provisions of law.
• Unlike Article 25, which focuses on individual rights, Article 26 is considered a collective right, though both are subject to public order, morality, and health.

 Additional Information

• Article 23 and Article 24:
• These articles fall under the Right against Exploitation.
• Article 23 prohibits human trafficking and begar (forced labor) in any form.
• Article 24 prohibits the employment of children below the age of 14 years in hazardous environments such as factories, mines, or other dangerous occupations.
• Article 27:
• Provides freedom as to the payment of taxes for the promotion of any particular religion.
• It mandates that no person shall be compelled to pay taxes where the proceeds are specifically appropriated for the maintenance of any particular religious denomination.
• Article 25:
• Guarantees the freedom of conscience and the right to freely profess, practice, and propagate religion to all individuals.

The correct answer is Spreadsheet data.

Key Points

• The .xlsx file extension represents a Microsoft Excel Open XML Spreadsheet file, which is the default format for Microsoft Excel versions 2007 and later.
• It is specifically designed to store spreadsheet data, organizing information into a grid of rows and columns to facilitate data entry, mathematical calculations, and statistical analysis.
• The .xlsx format is based on the Open XML standard, which uses XML (Extensible Markup Language) and ZIP compression to make files smaller, more secure, and easier to recover if corrupted compared to legacy formats.
• These files support advanced features such as complex formulas, PivotTables, data validation, and integrated charts or graphs for visual representation of data.
• Therefore, Spreadsheet data is the correct answer as it defines the primary purpose of the .xlsx file extension.

 Additional Information

• Booting the computer
• This process refers to the startup sequence of a computer system, which relies on system files such as BIOS/UEFI firmware, BOOTMGR, or .sys and .exe files to load the Operating System into memory.
• Text paragraphs
• Documents containing paragraphs of text are typically created using word processing software like Microsoft Word, which utilizes extensions like .docx, .doc, or .pdf to maintain text formatting and layout.
• Sound editing
• Audio editing and production involve digital audio files with extensions like .mp3, .wav, or .flac, which store digitized sound waves and metadata rather than tabular data.
• Legacy Excel Formats
• Before the introduction of Office 2007, Microsoft Excel primarily used the .xls extension, which was a proprietary Binary Interchange File Format (BIFF).

The correct answer is Transfer of tribal lands and intrusion of moneylenders and merchants..

Key Points

• The Kol uprising of 1831-32 was a significant tribal revolt in the Chhotanagpur region against the exploitative policies of the British East India Company and their agents.
• The primary catalyst was the large-scale transfer of tribal lands to outsiders, such as Sikhs and Muslims, who were granted farming rights by the local Raja of Chhotanagpur.
• Traditional tribal headmen, known as Mankis and Mundas, were displaced from their ancestral authority, leading to widespread resentment among the Munda, Oraon, and Ho tribes.
• The intrusion of Dikus (outsiders), including moneylenders and merchants, led to extreme economic exploitation through high-interest rates, land alienation, and the introduction of bonded labor.
• The rebellion was characterized by the burning of houses belonging to outsiders and the destruction of government property, spearheaded by leaders like Buddhu Bhagat, who fell in battle in 1832.

 Additional Information

• Geographical and Social Context
• The Chhotanagpur plateau covers parts of modern-day Jharkhand, Odisha, and Chhattisgarh, inhabited by diverse tribal groups with unique socio-legal systems.
• The Permanent Settlement of 1793 indirectly pressured local rulers to maximize revenue, forcing them to lease tribal lands to non-tribal contractors.
• The Kol tribesmen utilized traditional weapons like bows, arrows, and spears to resist the British military units deployed to suppress the movement.
• Following the suppression of the revolt, the British administration recognized the need for special laws, eventually leading to the creation of the South-West Frontier Agency to govern the region more sensitively.

The correct answer is Mohanlal.

Key Points

• On October 7, 2025, the legendary Indian actor Mohanlal Viswanathan was honored with the Chief of Army Staff (COAS) Commendation Card.
• The award was presented by General Upendra Dwivedi, who serves as the 30^th Chief of the Army Staff of the Indian Army.
• Mohanlal holds the honorary rank of Lieutenant Colonel in the Territorial Army, specifically attached to the 122 Infantry Battalion (Madras).
• He was the first actor in the history of the Indian Armed Forces to be conferred with this honorary rank, which he received in 2009 for his contributions to the Indian Army and for motivating the youth to join the forces.
• The COAS Commendation Card is a prestigious award given for individual acts of distinguished service or devotion to duty that are of a high order but do not necessarily meet the criteria for a gallantry medal.
• The recognition on this date acknowledges his continued commitment to the Territorial Army and his role as a brand ambassador for the defense forces through his public outreach and support of military initiatives.

 Additional Information

• Chief of Army Staff Commendation Card:
• This award is presented to all ranks of the Indian Army, including civilians and personnel of other services, for outstanding performance in the line of duty.
• It serves as a formal recognition of excellence and is recorded in the individual's service book.
• General Upendra Dwivedi:
• He took charge as the COAS on June 30, 2024, succeeding General Manoj Pande.
• His tenure has focused on technological infusion and modernization of the Indian Army under the initiative of Atmanirbhar Bharat.
• Territorial Army (TA):
• The Territorial Army is a second line of defense after the Regular Indian Army; it is not a profession or an occupation but a means for citizens to serve the nation in uniform.
• Other notable honorary members include Mahendra Singh Dhoni (Lieutenant Colonel) and Kapil Dev (Lieutenant Colonel).

The correct answer is Fifth.

Key Points

• The fifth edition of the Khelo India University Games (KIUG) is scheduled to take place in Rajasthan from November 24 to December 5, 2025. Hence, the provided statement is correct.
• This is the first time Rajasthan has been selected as the host state for this premier national-level multi-sport university event, following the fourth edition held in Northeast India. Hence, the provided statement is correct.
• The games are organized across seven major cities in the state, including Jaipur, Ajmer, Udaipur, Jodhpur, Bikaner, Kota, and Bharatpur, to ensure widespread participation and infrastructure utilization. Hence, the provided statement is correct.
• More than 5,000 athletes from over 200 universities across India are expected to participate in the 12-day event, competing for top honors in various athletic disciplines. Hence, the provided statement is correct.
• The 2025 edition includes 23 medal sports, with the introduction of beach volleyball, cycling, and canoeing & kayaking for the first time in the tournament history, while Kho-Kho remains a demonstration sport. Hence, the provided statement is correct.

 Additional Information

• History of KIUG Editions:
• First Edition (2020): Launched by Prime Minister Narendra Modi in Bhubaneswar, Odisha, featuring 17 sports.
• Second Edition (2022): Held in Bengaluru, Karnataka, where Jain University emerged as the overall champion.
• Third Edition (2023): Hosted by Uttar Pradesh across four cities (Lucknow, Varanasi, Greater Noida, and Gorakhpur).
• Fourth Edition (2024): Organized across the seven sister states of Northeast India, with Guwahati as the primary hub.
• Key Features of the Rajasthan Edition:
• Mascots: The official mascots for the 2025 games are named Khamma and Ghani, reflecting the cultural hospitality of the state.
• Age Category: The event specifically targets athletes in the Under-25 age group to bridge the gap between grassroots talent and international excellence.
• Organizing Bodies: It is a collaborative effort between the Ministry of Youth Affairs and Sports, Sports Authority of India (SAI), Association of Indian Universities (AIU), and the Rajasthan State Sports Council.

The correct answer is Commercial grain farming.

Key Points

• Commercial grain farming is the dominant agricultural practice in the temperate grasslands of North America, specifically the Great Plains of the USA and the Prairies of Canada.
• In this system, crops are grown primarily for sale in international markets, with wheat being the most significant crop, followed by maize, barley, and oats.
• This type of farming is characterized by large landholdings, often spanning hundreds or even thousands of hectares, which allows for a high degree of mechanization.
• The use of advanced technology such as tractors, seed drills, and combine harvesters ensures that the entire process from sowing to harvesting is highly efficient.
• Due to the low population density in these regions, there is a heavy reliance on machinery rather than manual labor, leading to high productivity per worker, although the yield per unit area may be lower than in intensive systems.

 Additional Information

• Plantation agriculture
• Commonly practiced in tropical and sub-tropical regions.
• Focuses on a single cash crop like tea, coffee, rubber, cashew, or sugarcane.
• Requires a large amount of labor and capital investment.
• Intensive subsistence farming
• Prevalent in densely populated areas of Monsoon Asia, such as India and China.
• Farmers use small plots of land to produce enough food for their own consumption with high labor input.
• Rice is usually the main crop produced in this system.
• Shifting cultivation
• Also known as slash-and-burn agriculture, practiced in tropical rainforests.
• Involves clearing a patch of land by felling trees and burning them to create fertile ash.
• Practiced by tribal communities in parts of Southeast Asia, Africa, and the Amazon basin.

The correct answer is Durlabhavardhana.

Key Points

• Xuanzang (Hiuen Tsang), the celebrated Chinese Buddhist monk and traveler, visited the valley of Kashmir in 631 AD and remained there until 633 AD.
• During this period, Kashmir was under the rule of Durlabhavardhana, who was the founder of the powerful Karkota Dynasty.
• The king accorded Xuanzang a magnificent royal reception, sending his own maternal uncle to the frontier to escort the pilgrim to the capital city, Pravarapura (modern-day Srinagar).
• Xuanzang spent two years in the region studying Buddhist Sutras and Shastras at the Jayendra Monastery, where the king provided him with twenty scribes to assist in copying sacred manuscripts.
• In his travelogue, Si-Yu-Ki, Xuanzang praised the king's administration and noted that the kingdom of Kashmir held political sway over several adjacent regions, including Taxila, Punch, and Rajauri.
• His accounts highlight that Kashmir was a major center for the Sarvastivada school of Buddhism, housing over 100 monasteries and 5,000 monks during the 7^th century.

 Additional Information

• Harshavardhana:
• He was the Pushyabhuti emperor of Kannauj and a contemporary of Durlabhavardhana.
• While he was Xuanzang's primary patron in India and organized the Prayag Assembly, he did not rule Kashmir, though he reportedly forced the Kashmiri king to surrender a tooth relic of the Buddha.
• Pulakeshin II:
• The most renowned king of the Chalukya Dynasty of Badami.
• He is famous for defeating Harshavardhana on the banks of the Narmada River, but his authority was centered in the Deccan, far from Kashmir.
• Yashodharman:
• A powerful king of Malwa who belonged to the Aulikara Dynasty.
• He achieved historical fame for defeating the Huna ruler Mihirakula in the 6^th century, which was nearly a century before Xuanzang arrived in India.

The correct answer is Stalactites and stalagmites.

Key Points

• Stalactites and stalagmites are the most common depositional landforms found within limestone caves, which are characteristic features of Karst topography.
• Stalactites are icicle-like structures that hang from the cave ceiling; they form when mineral-rich water drips through cracks in the rock, leaving behind tiny deposits of calcium carbonate (calcite) as carbon dioxide escapes into the cave air.
• Stalagmites are mounds or pillars that grow upward from the cave floor, created by the accumulation of calcite deposited by water dripping from the ceiling or the tips of stalactites above.
• The formation process relies on carbonation, where rainwater mixes with soil carbon dioxide to form a weak carbonic acid that dissolves the limestone (calcium carbonate) into calcium bicarbonate; upon entering the cave, the solution undergoes precipitation to revert to solid mineral form.
• When a stalactite and stalagmite eventually meet, they fuse together to form a continuous vertical column or pillar.

 Additional Information

• Glacial Landforms:
• Drumlins and eskers: These are glacial depositional features. Drumlins are smooth, oval hills of glacial till, while eskers are long, winding ridges composed of sand and gravel deposited by meltwater streams flowing within or under a glacier.
• Cirques and horns: These are glacial erosional landforms. A cirque is a bowl-shaped hollow carved at the head of a glacial valley, and a horn is a sharp, pyramid-like mountain peak.
• Fluvial Landforms:
• Levees and meanders: These are features of river systems. Meanders are broad loops or curves in a river's course, and levees are natural ridges of alluvium (sediment) deposited along the riverbanks during repeated flood events.

The correct answer is A displacement reaction occurs, forming copper metal on the iron nails.

Key Points

• The reaction between iron nails and copper sulphate solution is a fundamental example of a Single Displacement Reaction. This type of reaction occurs when a more reactive element displaces a less reactive element from its compound.
• The chemical transformation is represented by the equation: Fe(s) + CuSO₄(aq) → FeSO₄(aq) + Cu(s). In this process, Iron (Fe) atoms transition into the solution as ions, while Copper (Cu) ions from the solution are deposited as solid metal.
• Based on the Metal Reactivity Series, Iron is more reactive than Copper. Consequently, iron has a higher tendency to lose electrons (undergo oxidation) compared to copper, allowing it to displace copper ions from the sulphate solution.
• The reddish-brown deposit formed on the surface of the iron nails is identified as metallic copper. This physical change confirms that copper ions (Cu²⁺) have been reduced to solid copper (Cu).
• A distinct color change is also observed during the experiment: the characteristic blue color of the Copper Sulphate solution fades and gradually turns light green. This change is due to the formation of Iron (II) Sulphate (FeSO₄), also known as Ferrous Sulphate.

 Additional Information

• Understanding Other Reaction Types:
• Combination Reaction: A chemical change where two or more substances react to form a single new substance. A common example is the formation of water from hydrogen and oxygen gases.
• Double Displacement Reaction: This involves the mutual exchange of ions between two compounds to form two new compounds, often involving the formation of an insoluble precipitate.
• Decomposition Reaction: A process where a single complex compound breaks down into two or more simpler products, usually triggered by thermal, electrolytic, or photolytic energy.
• Reactivity Series Context:
• The Reactivity Series is an arrangement of metals in descending order of their reactivity. Metals like Potassium, Sodium, and Calcium are at the top, while noble metals like Gold and Platinum are at the bottom.
• Because Iron is higher than Copper in this series, the displacement is spontaneous. However, if a copper nail were placed in an iron sulphate solution, no reaction would occur.

The correct answer is Kinetic Energy.

Key Points

• When a rubber band is stretched, work is performed against the internal elastic forces of the material, and this work is stored as Elastic Potential Energy. This energy is a result of the change in the configuration or shape of the rubber molecules.
• The amount of stored energy is determined by Hooke’s Law and is calculated using the formula 1/2 × k × x², where k is the spring constant and x is the extension from the equilibrium position.
• Upon release, the restoring force (defined as F = −k × x) acts immediately to pull the rubber band back to its original relaxed state.
• As the rubber band snaps back, the stored potential energy is converted into Kinetic Energy, which is the energy an object possesses due to its motion.
• This transformation is a practical demonstration of the Law of Conservation of Energy, which dictates that energy cannot be created or destroyed but only changed from one form (potential) to another (kinetic).
• At the moment of maximum stretch, the potential energy is at its peak and kinetic energy is zero; at the moment of return to equilibrium, kinetic energy is at its peak while potential energy is zero.

 Additional Information

• Chemical Energy
• It is the potential energy stored in the chemical bonds of atoms and molecules.
• It is released during chemical reactions, such as those found in batteries, food digestion, and the combustion of fuels.
• Hydraulic Energy
• This energy is captured from the pressure or flow of liquids, typically water.
• It is the fundamental principle behind hydroelectric power plants and hydraulic machinery used in construction.
• Geothermal Energy
• It is the heat energy generated and stored within the Earth's interior.
• It originates from the radioactive decay of isotopes and the primordial heat from the planet's formation, often harnessed via hot springs or steam.

The correct answer is Schedule X.

Key Points

• Schedule X of the Indian Constitution, famously known as the Anti-Defection Law, was designed to curb the practice of political defections that often led to instability in the executive branch.
• It was officially incorporated into the Constitution through the 52^nd Constitutional Amendment Act, 1985, during the leadership of the Rajiv Gandhi government.
• The Schedule applies to members of both the Parliament (Lok Sabha and Rajya Sabha) and the State Legislatures (Legislative Assemblies and Councils).
• Disqualification occurs if a member voluntarily gives up the membership of their party, or if they vote or abstain from voting contrary to any direction (whip) issued by their political party without permission.
• The power to decide on questions of disqualification based on defection is vested in the Presiding Officer of the House, namely the Speaker or the Chairman.
• In the landmark Kihoto Hollohan v. Zachillhu case (1992), the Supreme Court affirmed that while the Presiding Officer has the power to decide, such decisions are subject to Judicial Review to prevent arbitrariness.
• The 91^st Constitutional Amendment Act, 2003, further refined this law by stipulating that at least two-thirds of the members of a party must agree to a merger for it to be valid and avoid disqualification.

 Additional Information

• Schedule IX:
• Introduced by the 1^st Constitutional Amendment Act, 1951, to protect laws related to land reforms and abolition of the Zamindari system.
• It was initially intended to keep these laws immune from Judicial Review on the grounds of violating fundamental rights.
• Schedule XI:
• Added by the 73^rd Constitutional Amendment Act, 1992, focusing on rural local self-governance.
• It contains 29 functional items placed under the jurisdiction of the Panchayati Raj Institutions as per Article 243-G.
• Schedule XII:
• Incorporated by the 74^th Constitutional Amendment Act, 1992, focusing on urban local self-governance.
• It specifies 18 functional subjects that fall under the authority of Municipalities as per Article 243-W.