West Bengal Group C 2016 Official Paper (Held On: 05 Mar, 2017) PYP (Previous Year Paper)

The correct answer is Africa.

Key Points

• Victoria Falls is located on the border of Zambia and Zimbabwe in southern Africa.
• It is formed by the Zambezi River, which is the fourth-longest river in Africa.
• Victoria Falls is one of the largest waterfalls in the world, with a width of approximately 1,708 meters (5,604 feet) and a height of 108 meters (354 feet).
• The falls are a UNESCO World Heritage Site and are considered one of the Seven Natural Wonders of the World.
• Locally, it is known as "Mosi-oa-Tunya" in the Lozi language, which means "The Smoke That Thunders."

Additional Information

• Geographical Significance:
• Victoria Falls lies in the Victoria Falls National Park in Zimbabwe and the Mosi-oa-Tunya National Park in Zambia.
• The region around the falls is home to diverse flora and fauna, including elephants, hippos, and crocodiles.
• Hydrological Facts:
• The Zambezi River flows through six countries: Zambia, Angola, Namibia, Botswana, Zimbabwe, and Mozambique.
• During the rainy season (February to May), the water flow can reach up to 500 million liters per minute.
• Tourism:
• Victoria Falls is a major tourist destination, offering activities such as bungee jumping, white-water rafting, and helicopter rides.
• Tourists can view the falls from both the Zimbabwean and Zambian sides, each offering unique perspectives.
• Conservation Efforts:
• The falls are protected under the UNESCO World Heritage designation to ensure their preservation.
• Efforts are in place to manage the impacts of climate change and tourism on the surrounding ecosystem.

The correct answer is Nitrogen.

Key Points

• Nitrogen constitutes approximately 78% of the Earth's atmosphere, making it the most abundant gas in the air.
• It is a vital component of the atmosphere but is largely inert, meaning it does not readily react with other elements under normal conditions.
• The second most abundant gas is oxygen, which makes up about 21% of the air.
• Nitrogen is essential for life on Earth as it is a key element in amino acids, proteins, and nucleic acids like DNA and RNA.
• The nitrogen cycle ensures the continuous availability of nitrogen in the ecosystem, converting it into usable forms for plants and animals.

Additional Information

• Composition of Earth's Atmosphere:
• The atmosphere is a mixture of gases, with nitrogen (78%) and oxygen (21%) being the most abundant.
• Other components include argon (~0.93%), carbon dioxide (~0.04%), and trace amounts of other gases like neon, helium, and methane.
• Nitrogen Cycle:
• Nitrogen in the atmosphere is converted into usable forms like ammonia and nitrates through processes like nitrogen fixation.
• These compounds are absorbed by plants and enter the food chain, eventually returning to the atmosphere through decomposition and denitrification.
• Importance of Nitrogen:
• Nitrogen is a crucial element for living organisms as it is a building block of proteins and nucleic acids.
• It is also used in industrial applications like fertilizers, explosives, and as a refrigerant.
• Other Atmospheric Gases:
• Oxygen is essential for respiration in most living organisms and supports combustion.
• Carbon dioxide plays a key role in photosynthesis and contributes to the greenhouse effect, regulating Earth's temperature.
• Trace gases like methane and ozone also play significant roles in climate and atmospheric chemistry.
• Inert Nature of Nitrogen:
• Nitrogen's triple bond in N₂ molecules makes it highly stable and non-reactive under normal conditions.
• This inertness is beneficial for various industrial applications, including providing a non-reactive environment for chemical processes.

The correct answer is 46 chromosomes.

Key Points

• A normal human somatic (body) cell contains 46 chromosomes, organized into 23 pairs, including 22 pairs of autosomes and one pair of sex chromosomes.
• The sex chromosomes determine an individual’s biological sex: females typically have two X chromosomes (XX), while males have one X and one Y chromosome (XY).
• Human chromosomes are located in the nucleus of each cell and are composed of DNA tightly coiled around histone proteins.
• Chromosomes carry genetic information essential for growth, development, and functioning of the human body.
• During reproduction, each parent contributes 23 chromosomes, resulting in a zygote with a total of 46 chromosomes.

Additional Information

• Autosomes and Sex Chromosomes:
• Autosomes are the non-sex chromosomes that carry most of the genetic material.
• The sex chromosomes (X and Y) determine the biological sex and carry genes linked to sex-specific traits.
• Chromosomal Disorders:
• Chromosomal abnormalities can occur due to extra or missing chromosomes, such as Down syndrome (trisomy 21) or Turner syndrome (monosomy X).
• Karyotyping:
• Karyotyping is a laboratory technique used to visualize an individual’s chromosome set to detect abnormalities.
• Cell Division:
• Chromosomes are duplicated during mitosis (for somatic cells) and meiosis (for gametes) to ensure proper genetic inheritance.
• Human Genome:
• The human genome consists of approximately 3 billion DNA base pairs spread across 46 chromosomes.

The correct answer is a type of cultivation.

Key Points

• Jhum cultivation, also referred to as shifting cultivation, is a traditional agricultural practice mainly followed in the northeastern states of India.
• It involves clearing a patch of forest land for cultivation, which is then abandoned after a few years to allow the land to regenerate naturally.
• This method is particularly practiced by tribal communities and is deeply rooted in their cultural traditions.
• Crops like rice, maize, millets, and vegetables are often grown during Jhum cultivation.
• It is considered a sustainable practice when done on a small scale with adequate fallow periods to allow soil recovery.

Additional Information

• Shifting Cultivation: A form of agriculture where land is cultivated temporarily and then left to regenerate after a few years of usage.
• Environmental Impact: Jhum cultivation can lead to deforestation, loss of biodiversity, and soil erosion if not managed properly.
• Slash and Burn Technique: The land is cleared by cutting and burning trees and vegetation before sowing seeds, a characteristic feature of Jhum cultivation.
• Fallows: The period during which the land is left uncultivated to restore its fertility naturally is crucial for maintaining ecological balance.
• Alternatives: Efforts are being made to promote sustainable agricultural practices like terrace farming and agroforestry to replace Jhum cultivation in regions where environmental damage is significant.

The correct answer is 22nd April.

Key Points

• Earth Day is celebrated annually on 22nd April to demonstrate support for environmental protection.
• It was first celebrated in 1970, spearheaded by U.S. Senator Gaylord Nelson as an environmental teach-in.
• The theme of Earth Day changes each year to address pressing environmental issues; for example, the theme for 2023 was "Invest in Our Planet."
• Earth Day is coordinated globally by Earth Day Network and is observed in more than 193 countries.
• It plays a significant role in raising awareness about critical environmental issues, such as climate change, deforestation, and pollution.

Additional Information

• Environmental Movement: Earth Day marks the birth of the modern environmental movement, which gained momentum in the 1970s.
• UN Involvement: In 2009, the United Nations officially recognized 22nd April as International Mother Earth Day.
• Global Participation: Events such as tree-planting drives, clean-up campaigns, and educational programs are conducted worldwide on this day to promote environmental sustainability.
• Paris Agreement: The landmark Paris Climate Agreement was signed on Earth Day in 2016 by 175 parties to combat global warming.
• Environmental Education: Earth Day is a platform to educate people about sustainable practices, renewable energy, and conservation efforts to protect the planet for future generations.

The correct answer is night blindness.

Key Points

• Night blindness, scientifically known as nyctalopia, is primarily caused by a deficiency of Vitamin A.
• Vitamin A is essential for the production of rhodopsin, a pigment in the retina that helps the eyes adapt to low-light conditions.
• This deficiency can lead to difficulty seeing in dim light or darkness, a hallmark symptom of night blindness.
• Vitamin A-rich foods such as carrots, spinach, sweet potatoes, and fish can help prevent night blindness.
• If untreated, severe Vitamin A deficiency may lead to more serious eye conditions, including xerophthalmia and corneal ulcers.

Additional Information

• Vitamin A: It is a fat-soluble vitamin essential for vision, immune function, reproduction, and cellular communication.
• Xerophthalmia: A severe form of Vitamin A deficiency that causes dryness of the conjunctiva and cornea, potentially leading to blindness.
• Rhodopsin: A light-sensitive protein found in the rod cells of the retina, crucial for vision in low-light conditions.
• Sources of Vitamin A: Rich dietary sources include liver, dairy products, eggs, and plant-based sources like carrots, sweet potatoes, and leafy greens.
• Global Concern: Vitamin A deficiency is a public health issue in many developing countries, particularly affecting children and pregnant women.

The correct answer is to transport oxygen.

Key Points

• Hemoglobin is a protein found in red blood cells that binds with oxygen to facilitate its transportation throughout the body.
• It is composed of four subunits, each containing an iron ion that binds to oxygen molecules in the lungs.
• Hemoglobin efficiently delivers oxygen to tissues and organs where it is required for cellular respiration and energy production.
• It also plays a role in transporting carbon dioxide, a waste product, from tissues back to the lungs for exhalation.
• Hemoglobin's oxygen-binding capacity is influenced by factors such as pH levels, carbon dioxide concentration, and temperature.

Additional Information

• Structure of Hemoglobin: Hemoglobin is a globular protein made up of two alpha and two beta chains, each with a heme group that contains an iron atom responsible for oxygen binding.
• Oxygen Dissociation Curve: The oxygen-hemoglobin dissociation curve is sigmoidal, indicating how hemoglobin's ability to bind oxygen changes with oxygen concentration.
• Anemia: A condition caused by low levels of hemoglobin, leading to insufficient oxygen supply to the body and symptoms like fatigue and weakness.
• Sickle Cell Disease: A genetic disorder where abnormal hemoglobin (hemoglobin S) causes red blood cells to become misshapen, leading to reduced oxygen-carrying capacity.
• Carbon Monoxide Poisoning: Hemoglobin has a higher affinity for carbon monoxide than oxygen, which can inhibit oxygen transport and lead to life-threatening conditions.

The correct answer is Joint Photographic Experts Group.

Key Points

• JPEG stands for Joint Photographic Experts Group, a standard for compressing and storing digital images.
• It was developed by the ISO (International Organization for Standardization) and the ITU-T (International Telecommunication Union - Telecommunication Standardization Sector).
• JPEG uses a compression algorithm that allows for significant reductions in file size while maintaining acceptable image quality, ideal for web usage and storage.
• The JPEG standard was formally introduced in 1992, making it one of the earliest and most widely adopted image compression standards.
• It supports lossy compression, which reduces file size by discarding some image data, though it is less suitable for images requiring high precision, such as medical imaging.

Additional Information

• Compression Techniques in JPEG:
• JPEG uses Discrete Cosine Transform (DCT) to convert spatial image data into frequency components for effective compression.
• It applies quantization, which reduces precision in less visually significant parts of the image to achieve compression.
• Huffman coding or arithmetic coding is used for further compression in the encoding stage.
• File Extensions: Images compressed using the JPEG standard typically use extensions like .jpg, .jpeg, or .jpe.
• JPEG vs PNG: JPEG is better suited for photographs and images with gradients, while PNG, which uses lossless compression, is more appropriate for graphics or images requiring transparency.
• Advanced JPEG Variants: Standards like JPEG 2000 and JPEG XR have been developed to address some limitations of the original JPEG format, such as enhanced compression or support for higher bit depths.
• Limitations: JPEG compression may introduce artifacts, especially at higher compression levels, and is not suitable for editing-intensive workflows due to its lossy nature.

The correct answer is Dynamite.

Key Points

• Alfred Nobel, a Swedish chemist and engineer, invented dynamite in 1867.
• Nobel's invention was a way to make the use of nitroglycerin safer by stabilizing it with an absorbent substance called diatomaceous earth.
• Dynamite revolutionized construction, mining, and demolition industries by providing a powerful and safer alternative to previous explosives.
• Alfred Nobel patented dynamite under the name "Nobel's Safety Powder" and later commercialized it worldwide.
• The invention of dynamite also paved the way for Nobel's establishment of the Nobel Prizes using the wealth he accumulated from his patents and businesses.

Additional Information

• Nitroglycerin: A highly explosive liquid that was discovered by Ascanio Sobrero in 1847. It was highly unstable and difficult to handle before Nobel's invention.
• Diatomaceous Earth: A naturally occurring, absorbent material used by Nobel to stabilize nitroglycerin and make it safer to use.
• Nobel Prizes: Established by Alfred Nobel in his will, these international awards recognize outstanding achievements in fields like Physics, Chemistry, Medicine, Literature, Peace, and Economic Sciences.
• Applications of Dynamite: Dynamite became widely used in construction for creating tunnels, bridges, and railroads, and in mining for extracting minerals.
• Controversy Around Dynamite: Despite its industrial benefits, dynamite was also misused for military purposes, leading Nobel to dedicate his fortune to promoting peace through the Nobel Prizes.

The correct answer is Nepal.

Key Points

• Mount Everest, the world's highest peak at an elevation of 8,848.86 meters (29,031.7 feet), is located in the Mahalangur Himal sub-range of the Himalayas, straddling the border between Nepal and Tibet (China).
• The southern side of Mount Everest, including the summit, lies in Sagarmatha Zone, Nepal, making Nepal its principal location.
• The mountain is known as Sagarmatha in Nepali and Chomolungma in Tibetan, reflecting its cultural significance in both regions.
• Everest Base Camp in Nepal is a major destination for trekkers and climbers, attracting adventurers worldwide to explore the mountain's southern slopes.
• Mount Everest was first successfully climbed in 1953 by Sir Edmund Hillary (New Zealand) and Tenzing Norgay (Nepal), creating a historic milestone in mountaineering.

Additional Information

• Geographical Location:
• Mount Everest is part of the Great Himalayan Range, which stretches across countries like Nepal, India, Bhutan, and China.
• The mountain lies at 27°59′17″N latitude and 86°55′31″E longitude.
• Formation:
• Mount Everest was formed approximately 60 million years ago due to the collision between the Indian and Eurasian tectonic plates.
• It continues to grow slightly each year as the plates push against each other.
• Climbing Challenges:
• Climbing Mount Everest involves risks such as extreme altitude, harsh weather, avalanches, and crevasses.
• Altitude sickness and the “death zone” above 8,000 meters are major challenges for climbers.
• Cultural Significance:
• In Nepalese culture, Mount Everest is considered sacred and is associated with spiritual reverence.
• The mountain is part of the Sagarmatha National Park, a UNESCO World Heritage Site.
• Trekking and Tourism:
• Tourism related to Mount Everest significantly contributes to Nepal’s economy, particularly through trekking and mountaineering.
• The Everest Base Camp trek is one of the most popular trekking routes in the world.

The correct answer is Wetland.

Key Points

• The Ramsar Convention, signed in 1971 in Ramsar, Iran, is an international treaty for the conservation and sustainable use of wetlands.
• A Ramsar site is a wetland site designated to be of international importance under the Ramsar Convention.
• India is a signatory to the Ramsar Convention and has 75 Ramsar sites as of 2023, covering an area of over 1.33 million hectares.
• Wetlands are critical ecosystems providing habitats for diverse flora and fauna, regulating water cycles, and supporting livelihoods for millions of people globally.
• The designation of Ramsar sites promotes their conservation and sustainable use to ensure ecological balance and biodiversity preservation.

Additional Information

• Wetlands:
• Wetlands are areas where water covers the soil, either permanently or seasonally, and include swamps, marshes, estuaries, and mangroves.
• They provide essential services like carbon sequestration, flood control, water purification, and groundwater recharge.
• Ramsar Criteria for Wetland Designation:
• A wetland can be designated as a Ramsar site if it supports vulnerable, endangered, or critically endangered species or unique ecosystems.
• It may also qualify if it regularly supports 20,000 or more waterbirds or contributes to the conservation of biological diversity.
• Montreux Record:
• This is a register of Ramsar sites where changes in ecological character have occurred, are occurring, or are likely to occur due to human or natural factors.
• In India, Loktak Lake (Manipur) and Keoladeo National Park (Rajasthan) are listed in the Montreux Record.
• World Wetlands Day:
• Celebrated annually on February 2, the date the Ramsar Convention was signed, to raise awareness about wetlands.
• The 2023 theme was "Wetlands Restoration," emphasizing the need for global efforts to restore degraded wetlands.

The correct answer is Compressed Natural Gas.

Key Points

• Compressed Natural Gas (CNG) is a fuel that is made by compressing natural gas (methane) to less than 1% of its volume at standard atmospheric pressure.
• CNG is primarily used as a cleaner alternative to gasoline and diesel for powering vehicles, as it produces less carbon emissions.
• CNG is stored and transported in high-pressure cylinders to maintain its compressed state.
• It is considered environmentally friendly because it emits fewer pollutants, such as carbon monoxide, hydrocarbons, and nitrogen oxides.
• CNG is widely used in urban areas for public transportation, particularly in buses and taxis, due to its lower environmental impact.

Additional Information

• Natural Gas Composition: Natural gas primarily consists of methane (CH₄), along with small amounts of other hydrocarbons like ethane, propane, and butane.
• Environmental Benefits: CNG reduces greenhouse gas emissions compared to traditional fossil fuels, making it a popular choice in green energy initiatives.
• Safety Factor: CNG is lighter than air, so in the event of a leak, it disperses quickly into the atmosphere, reducing the risk of fire or explosion.
• Cost Efficiency: CNG is often more affordable than gasoline or diesel, providing economic benefits for both consumers and governments.
• Global Use: Countries like India, Pakistan, Brazil, and Iran are leading adopters of CNG due to its cost-effectiveness and environmental advantages.

The correct answer is 206.

Key Points

• The adult human skeletal system consists of 206 bones, which provide structure, protection, and mobility to the body.
• At birth, humans have around 270 bones, but some of these fuse together as they grow.
• The bones are categorized into two main groups: axial skeleton (80 bones) and appendicular skeleton (126 bones).
• The axial skeleton includes the skull, vertebral column, and rib cage, while the appendicular skeleton consists of the limbs and girdles.
• The largest bone in the human body is the femur (thigh bone), and the smallest is the stapes bone in the middle ear.

Additional Information

• Bone Composition:
• Human bones are made of living tissues, primarily a matrix of collagen fibers and calcium phosphate.
• This composition provides bones with both strength and flexibility.
• Types of Bones:
• Bones are classified into five types: long bones, short bones, flat bones, irregular bones, and sesamoid bones.
• Examples include the femur (long bone), carpals (short bones), and scapula (flat bone).
• Bone Marrow:
• Bones contain bone marrow, which produces red blood cells, white blood cells, and platelets.
• There are two types of bone marrow: red marrow (active in blood cell production) and yellow marrow (stores fat).
• Bone Remodeling:
• Bones are dynamic tissues that undergo constant remodeling through the activity of osteoblasts (bone formation) and osteoclasts (bone resorption).
• This process helps repair micro-damages and regulates calcium levels in the body.
• Common Bone Disorders:
• Examples include osteoporosis (weak and brittle bones), arthritis (inflammation of joints), and fractures caused by trauma or stress.
• Bone health can be maintained through proper nutrition (calcium and vitamin D) and regular exercise.

The correct answer is Maharashtra.

Key Points

• The Ellora caves are located in the Aurangabad district of Maharashtra, India.
• They are a UNESCO World Heritage Site and represent one of the largest rock-cut temple complexes globally.
• Ellora comprises 34 caves, which include Hindu, Buddhist, and Jain religious structures, showcasing India's ancient religious harmony.
• The Kailasa Temple (Cave 16) is one of the most prominent structures in Ellora, dedicated to Lord Shiva, and carved out of a single rock.
• The Ellora caves date back to the period between the 6th and 10th century CE.

Additional Information

• UNESCO World Heritage Status: Ellora was designated as a UNESCO World Heritage Site in 1983 for its cultural significance.
• Rock-cut Architecture: The caves are an exemplary representation of rock-cut architecture, carved directly into the Charanandri Hills.
• Religious Significance: The caves represent a confluence of Hinduism, Buddhism, and Jainism, reflecting India's religious diversity during ancient times.
• Kailasa Temple: The Kailasa Temple is famous for its intricate carvings and massive structure, believed to have been constructed using approximately 200,000 tons of rock.
• Tourism: Ellora caves are a major tourist attraction, drawing visitors from across the globe to witness their historical and architectural magnificence.

The correct answer is Manas.

Key Points

• Manas National Park is located in the Indian state of Assam, not West Bengal.
• It is a UNESCO World Heritage Site and a Project Tiger Reserve, known for its rich biodiversity and scenic beauty.
• Manas National Park is situated in the foothills of the Himalayas, alongside the Manas River.
• It is famous for rare and endangered species like the Assam roofed turtle, golden langur, pygmy hog, and the Bengal tiger.
• Other listed reserves—Gorumara, Sundarban, and Chapramari—are located in West Bengal.

Additional Information

• Gorumara National Park: Located in the Dooars region of West Bengal, it is renowned for its population of Indian rhinoceros and rich flora and fauna.
• Sundarban National Park: A UNESCO World Heritage Site, it forms part of the Sundarbans delta in West Bengal and is famous for the Bengal tiger and mangrove forests.
• Chapramari Wildlife Sanctuary: Situated in the Dooars region of West Bengal, it is one of the oldest wildlife sanctuaries in India, known for elephants and diverse bird species.
• Manas Biosphere Reserve: In Assam, this park is a biodiversity hotspot and a critical habitat for endangered wildlife species.
• UNESCO World Heritage Sites in India: Both Manas (Assam) and Sundarban (West Bengal) are recognized as UNESCO World Heritage Sites for their ecological and cultural significance.

The correct answer is Bankim Chandra Chattopadhyay.

Key Points

• Bankim Chandra Chattopadhyay was a prominent Indian novelist, poet, and journalist, widely regarded as one of the key figures in modern Indian literature.
• The novel Ananda Math was written in Bengali in 1882 and is considered one of his most influential works.
• The novel introduced the patriotic song "Vande Mataram", which became a rallying cry for the Indian independence movement and was later adopted as India's national song.
• Ananda Math is set against the backdrop of the Sannyasi Rebellion of the late 18th century, reflecting themes of patriotism and resistance against oppression.
• Bankim Chandra Chattopadhyay is often referred to as the "Sahitya Samrat" (Emperor of Literature) for his immense contribution to Indian literature.

Additional Information

• Vande Mataram:
• Written by Bankim Chandra Chattopadhyay, it was included in the novel Ananda Math.
• It was later set to music by Rabindranath Tagore and became a symbol of India's nationalist movement.
• The first two stanzas of "Vande Mataram" were officially adopted as the National Song of India in 1950.
• Sannyasi Rebellion:
• This was a series of uprisings by ascetics (Sannyasis) against British colonial rule in Bengal during the late 18th century.
• The rebellion forms the historical context for the novel Ananda Math.
• Bankim Chandra's Other Works:
• He authored several other notable novels, including Durgeshnandini, Kapalkundala, and Devi Chaudhurani.
• His works often blended historical themes with social and cultural commentary.
• Legacy:
• Bankim Chandra Chattopadhyay's literary contributions laid the foundation for modern Bengali literature.
• His emphasis on patriotism and cultural identity continues to inspire generations of Indians.

The correct answer is Australia.

Key Points

• In Australia, Christmas falls during the summer season as the country is located in the Southern Hemisphere, where seasons are opposite to those in the Northern Hemisphere.
• Australia experiences summer from December to February, making Christmas a warm-weather celebration, often accompanied by outdoor activities like barbecues and beach gatherings.
• Traditional Christmas meals in Australia often include cold dishes, seafood, and desserts like pavlova, reflecting the summer climate.
• Australians also celebrate with unique traditions like "Carols by Candlelight" events, which are held outdoors during the festive season.
• Despite the summer weather, many Australians still incorporate traditional winter-themed decorations, such as Christmas trees and Santa Claus imagery.

Additional Information

• Seasonal Differences Between Hemispheres:
• The Earth’s axial tilt causes opposite seasons in the Northern and Southern Hemispheres. When it is summer in the Southern Hemisphere, it is winter in the Northern Hemisphere.
• This explains why countries like Australia, New Zealand, and South Africa experience summer during Christmas.
• Christmas Traditions in the Southern Hemisphere:
• Countries in the Southern Hemisphere adapt their Christmas traditions to suit the warm weather, including outdoor celebrations and lighter meals.
• In some regions, people attend beach parties or community events to celebrate the holiday.
• Global Variations in Christmas Celebrations:
• Christmas customs vary widely around the world, influenced by local culture, climate, and history.
• For example, European countries often have winter-themed markets and snow-related festivities, while tropical countries may incorporate local traditions into their celebrations.
• Historical Context of Christmas:
• Christmas is celebrated on December 25th to commemorate the birth of Jesus Christ, though its exact origin is rooted in both Christian and pagan traditions.
• The holiday has evolved over time, blending religious, cultural, and commercial elements worldwide.

The correct answer is Madahn Mohan Malaviya.

Key Points

• Madahn Mohan Malaviya was posthumously awarded the Bharat Ratna, India’s highest civilian award, in 2014.
• He was a prominent Indian educationist, freedom fighter, and politician, famously known for founding the Banaras Hindu University (BHU) in 1916.
• Malaviya played a pivotal role in the Indian independence movement and was associated with the Indian National Congress, serving as its president four times.
• He was also a key figure in promoting social reforms and worked extensively against untouchability and caste discrimination in society.
• Malaviya is remembered for his contributions to journalism, as he was the founder of the newspaper The Leader, published from Allahabad.

Additional Information

• Bharat Ratna Award:
• Established in 1954, it is India’s highest civilian award, given for exceptional service in art, literature, science, and public service.
• The award consists of a certificate (Sanad) signed by the President and a medallion, but it does not carry any monetary grant.
• Posthumous awards are allowed under the Bharat Ratna criteria.
• Banaras Hindu University (BHU):
• Founded in 1916 by Madahn Mohan Malaviya, BHU is one of the largest residential universities in Asia.
• The university has been a center for excellence in education and research across diverse fields.
• Indian National Congress (INC):
• Malaviya served as the INC president in 1909, 1918, 1932, and 1933, contributing significantly to the freedom struggle.
• He emphasized self-reliance and education as key tools for achieving independence.
• Social Reforms:
• Malaviya worked to abolish untouchability and improve the conditions of marginalized communities.
• He promoted Hindu-Muslim unity and advocated for the upliftment of women through education.

The correct answer is 2014.

Key Points

• The state of Telangana was officially formed on 2 June 2014, becoming the 29th state of India.
• Telangana was created by bifurcating the state of Andhra Pradesh due to long-standing demands for a separate state by the Telangana region.
• The formation was the result of the Andhra Pradesh Reorganisation Act, 2014, passed by the Indian Parliament in February 2014.
• K. Chandrashekar Rao (KCR), the leader of the Telangana Rashtra Samithi (TRS), became the first Chief Minister of Telangana.
• Hyderabad, a major IT and cultural hub, serves as the joint capital for both Telangana and Andhra Pradesh for a period of 10 years, as per the Reorganisation Act.

Additional Information

• Telangana Movement:
• The demand for a separate Telangana state dates back to 1953, following the States Reorganisation Act of 1956.
• The movement gained significant momentum in the 2000s under the leadership of the Telangana Rashtra Samithi (TRS).
• It was fueled by grievances related to perceived neglect in terms of resource allocation, employment, and development in the Telangana region.
• Andhra Pradesh Reorganisation Act, 2014:
• This act, also known as the Telangana Act, provided the legal framework for the bifurcation of Andhra Pradesh into two states: Andhra Pradesh and Telangana.
• The bill was passed by the Lok Sabha on 18 February 2014 and by the Rajya Sabha on 20 February 2014.
• Economic Impact:
• Hyderabad, the joint capital, contributes significantly to the GDP of Telangana, being a hub for IT, pharmaceuticals, and other industries.
• Post bifurcation, both Andhra Pradesh and Telangana focused on attracting investments to boost their respective economies.
• Geographical and Cultural Significance:
• Telangana is bordered by Maharashtra, Chhattisgarh, Karnataka, and Andhra Pradesh, and is known for its rich history and cultural heritage.
• Key tourist destinations include Charminar, Golconda Fort, and the temples of Warangal.

The correct answer is Einstein.

Key Points

• Albert Einstein is best known for his Theory of Relativity, which revolutionized the understanding of space, time, and gravity.
• The Theory of Relativity includes two key components: the Special Relativity (1905) and General Relativity (1915).
• Special Relativity introduced the famous equation E=mc², establishing the relationship between energy (E), mass (m), and the speed of light (c).
• General Relativity extended these ideas to include gravity, describing it as the warping of space-time by massive objects.
• Einstein’s work laid the foundation for modern physics, influencing fields such as cosmology, quantum mechanics, and astrophysics.

Additional Information

• Special Relativity: This theory focuses on the relationship between space and time for objects moving at constant speeds in the absence of gravity. A key concept is that the speed of light is constant for all observers.
• General Relativity: This theory explains gravity as the curvature of space-time caused by mass and energy. It predicts phenomena such as black holes and gravitational waves.
• Gravitational Waves: Predicted by Einstein in 1916, these are ripples in space-time caused by accelerating massive objects. They were first detected in 2015 by the LIGO observatory.
• Time Dilation: A phenomenon from relativity where time appears to move slower for an object moving at high speeds or in a strong gravitational field relative to an observer.
• Legacy: Einstein received the Nobel Prize in Physics in 1921, not for relativity, but for his explanation of the photoelectric effect, which was crucial for quantum theory development.

The correct answer is Katmandu.

Key Points

• The 18th SAARC Summit was held on 26th-27th November 2014 in Katmandu, Nepal.
• This was the third time Nepal hosted the SAARC Summit, after hosting it in 1987 and 2002.
• The summit's theme was "Deeper Integration for Peace and Prosperity", focusing on regional cooperation and integration.
• The leaders from the eight SAARC member countries, including India, Pakistan, and Sri Lanka, participated in the summit.
• Key agreements signed included the SAARC Framework Agreement on Energy Cooperation and discussions on improving connectivity within the region.

Additional Information

• SAARC (South Asian Association for Regional Cooperation):
• Founded in 1985, SAARC is an organization of South Asian nations aimed at promoting economic and regional integration.
• The eight member countries are Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka.
• SAARC secretariat is headquartered in Katmandu, Nepal.
• 18th SAARC Summit Highlights:
• The summit emphasized closer economic ties and the need for regional connectivity through road, rail, and energy cooperation.
• The leaders discussed enhancing cooperation in trade, investment, and energy within the South Asian region.
• Energy Cooperation Agreement:
• The SAARC Framework Agreement on Energy Cooperation (Electricity) was signed to foster cross-border energy trade within the region.
• This agreement was seen as a significant step towards ensuring energy security and regional integration.
• Challenges of SAARC:
• Frequent political tensions between member states, particularly India and Pakistan, often hinder the progress of SAARC initiatives.
• The lack of effective implementation of agreements and regional projects remains a key challenge.

The correct answer is National Institution for Transforming India Aayog.

Key Points

• The Planning Commission was replaced by the National Institution for Transforming India (NITI Aayog) on August 13, 2014, by the Government of India.
• NITI Aayog was established to promote cooperative federalism and ensure greater involvement of state governments in the economic policy-making process.
• It functions as a policy think tank of the Government of India, offering strategic and technical advice to the central and state governments.
• The Prime Minister of India serves as the Chairperson of NITI Aayog, and it includes a Governing Council comprising Chief Ministers of all states and union territories.
• Unlike the Planning Commission, NITI Aayog does not have the power to allocate funds to states; instead, it focuses on policy formulation and monitoring.

Additional Information

• Planning Commission:
• Established in 1950 by a resolution of the Government of India, it was tasked with formulating five-year plans for economic development.
• Its approach was focused on centralized planning, which lacked flexibility and state-level participation.
• Criticism of its inefficiency and outdated approach led to its replacement by NITI Aayog.
• NITI Aayog's Objectives:
• Promote inclusive and sustainable development.
• Encourage innovation and technology adoption in various sectors.
• Formulate plans for economic growth by involving all stakeholders, including states, civil society, and private entities.
• Key Initiatives by NITI Aayog:
• Aspirational Districts Programme: Aimed at improving socio-economic indicators in underdeveloped districts.
• Atal Innovation Mission (AIM): Promotes innovation and entrepreneurship through initiatives like Atal Tinkering Labs.
• Digital India Campaign: Supports the government's vision of transforming India into a digitally empowered society.
• Difference Between Planning Commission and NITI Aayog:
• The Planning Commission followed a top-down approach, while NITI Aayog emphasizes a bottom-up approach to involve states and local bodies.
• Planning Commission was focused on fund allocation, whereas NITI Aayog focuses on policy formulation and strategic planning.
• NITI Aayog encourages public-private partnerships to drive development, a concept not emphasized by the Planning Commission.

The correct answer is Agni-V.

Key Points

• Agni-V is India's maiden nuclear-tipped Intercontinental Ballistic Missile (ICBM), developed by the Defence Research and Development Organisation (DRDO).
• The missile has a range of over 5,000 km, making it capable of reaching most parts of Asia and Europe.
• Agni-V uses a three-stage solid-fueled engine and is equipped with advanced navigation and guidance systems for high accuracy.
• The missile was first successfully test-fired on 19 April 2012 and has since undergone multiple successful tests.
• It strengthens India's strategic deterrence capabilities and is a part of its nuclear triad for maintaining credible minimum deterrence.

Additional Information

• ICBM (Intercontinental Ballistic Missile)
• An ICBM is a missile with a minimum range of 5,500 km, primarily designed for nuclear weapons delivery.
• ICBMs can travel across continents and are launched from silos, submarines, or mobile launchers.
• Agni Series Missiles
• The Agni missile series is a family of medium to intercontinental-range ballistic missiles developed by DRDO.
• Agni-I to Agni-IV are intermediate-range missiles, while Agni-V and Agni-VI are ICBMs.
• DRDO (Defence Research and Development Organisation)
• DRDO is India's premier organization for military research and development, established in 1958.
• It develops advanced weapon systems, including missiles, aircraft, and defense electronics.
• Nuclear Triad
• The nuclear triad refers to the capability to launch nuclear weapons from land, air, and sea platforms.
• India's nuclear triad is supported by missiles like Agni-V, submarines like INS Arihant, and aircraft like Mirage 2000.
• Strategic Deterrence
• Strategic deterrence is the use of credible threats to prevent adversaries from taking aggressive actions.
• Agni-V enhances India's deterrence by showcasing its ability to deliver nuclear payloads over long distances.

The correct answer is Vadhavan.

Key Points

• Vadhavan is set to become India’s 13th major port, located in Maharashtra, under the Sagarmala initiative.
• The port aims to serve as a hub for handling large vessels and will focus on container cargo operations.
• It is being developed by the Jawaharlal Nehru Port Trust (JNPT) in collaboration with the Government of Maharashtra.
• The proposed port will have a natural draft of 20 meters, making it suitable for large container ships without dredging.
• Vadhavan port is expected to boost trade and enhance the capacity of India’s maritime sector.

Additional Information

• Major Ports in India: India currently has 12 major ports, including Mumbai, Chennai, Kolkata, Paradip, and Kochi.
• Sagarmala Programme: A flagship initiative by the Ministry of Ports, Shipping, and Waterways to modernize ports and improve port-led development.
• Natural Draft: A measure of the depth of water available at a port; Vadhavan’s natural draft of 20 meters is among the deepest in India.
• Strategic Importance: Vadhavan port is expected to reduce dependency on foreign ports for container transshipment and boost India’s trade competitiveness globally.
• Environmental Concerns: The development of Vadhavan port has raised environmental issues, as the site falls near eco-sensitive zones; mitigation plans are being implemented.

The correct answer is Tennis.

Key Points

• Roger Federer is a professional tennis player from Switzerland, widely regarded as one of the greatest players in the history of the sport.
• Federer has won a total of 20 Grand Slam singles titles, including 8 Wimbledon titles, the most in the history of the tournament for a male player.
• He held the world No. 1 position in the ATP rankings for a record 310 weeks, including 237 consecutive weeks.
• Federer has achieved the Career Grand Slam, winning all four major tournaments (Australian Open, French Open, Wimbledon, and US Open) during his career.
• He is known for his elegant playing style, versatility on all court surfaces, and sportsmanship on and off the court.

Additional Information

• Tennis Grand Slam Tournaments
• The four major tournaments in tennis are the Australian Open, French Open, Wimbledon, and US Open.
• Winning all four tournaments in a single year is called a "Calendar Grand Slam," achieved by only a few players.
• These tournaments represent the pinnacle of professional tennis and are played on different surfaces: hard court, clay, and grass.
• ATP Rankings
• The ATP (Association of Tennis Professionals) rankings are used to determine the world's top male tennis players.
• Rankings are calculated based on points earned at various tournaments over the past 52 weeks.
• Federer's 310 weeks as world No. 1 is an all-time record in men's tennis.
• Roger Federer's Philanthropy
• Federer runs the Roger Federer Foundation, which focuses on providing education and sports programs to underprivileged children.
• The foundation has supported numerous projects in Africa and Switzerland.
• He is also actively involved in fundraising events and exhibitions for charitable causes.
• Rivalries
• Federer has had legendary rivalries with players like Rafael Nadal and Novak Djokovic, often referred to as the "Big Three" of tennis.
• Matches between Federer and Nadal are considered among the greatest in tennis history, including the 2008 Wimbledon final.

The correct answer is Juno.

Key Points

• Juno is a NASA spacecraft designed specifically to study Jupiter and its environment.
• The spacecraft was launched on August 5, 2011, aboard an Atlas V rocket from Cape Canaveral Air Force Station in Florida.
• Juno entered Jupiter's orbit on July 4, 2016, and has been conducting detailed investigations of the planet since then.
• The mission aims to understand the origin and evolution of Jupiter, including its composition, gravity field, magnetic field, and polar magnetosphere.
• Juno uses a polar orbit to minimize radiation exposure and maximize its ability to observe Jupiter’s poles.

Additional Information

• Juno’s Instruments: Juno is equipped with eight scientific instruments including JunoCam, JIRAM (Jovian Infrared Auroral Mapper), and MWR (Microwave Radiometer) to study Jupiter's atmosphere, auroras, and interior structure.
• Juno's Solar Power: Juno is the first spacecraft to operate on solar power at such a great distance from the Sun, with its three large solar panels providing the necessary energy.
• Radiation Challenges: Jupiter’s intense radiation belts pose significant challenges, and Juno’s electronics are housed in a titanium vault to protect them from radiation damage.
• Scientific Discoveries: Juno has provided groundbreaking insights, including the discovery of Jupiter's asymmetrical magnetic field and an understanding of its deep atmospheric winds and massive polar cyclones.
• Mission Extension: The mission, initially planned to end in 2021, has been extended until 2025 to allow Juno to explore Jupiter’s moons, including Ganymede, Europa, and Io.

The correct answer is Rakhaldas Banerjee.

Key Points

• Rakhaldas Banerjee, an officer of the Archaeological Survey of India (ASI), discovered the ruins of Mohenjodaro in 1922.
• The site of Mohenjodaro is one of the most prominent urban centers of the Indus Valley Civilization, located in present-day Sindh, Pakistan.
• The discovery was made during an excavation led by Banerjee, revealing a highly advanced ancient city with structured urban planning.
• Mohenjodaro, meaning "Mound of the Dead," was listed as a UNESCO World Heritage Site in 1980 due to its historical significance.
• The city provides invaluable insights into the culture, trade, and urban planning of the Indus Valley Civilization, which dates back to around 2500 BCE.

Additional Information

• Indus Valley Civilization:
• The Indus Valley Civilization is one of the world's oldest urban civilizations, contemporary to Mesopotamia and Ancient Egypt.
• It is known for its advanced urban planning, drainage systems, and standardized weights and measures.
• Key sites include Mohenjodaro, Harappa, Dholavira, and Kalibangan.
• Urban Planning at Mohenjodaro:
• The city had a well-planned grid layout, with streets running at right angles.
• It featured advanced drainage systems and structures like the Great Bath and granaries.
• The houses were made of baked bricks and had access to wells and bathrooms.
• Great Bath of Mohenjodaro:
• The Great Bath is one of the most famous structures of Mohenjodaro, believed to have been used for ritual bathing.
• It is an early example of public water management and engineering.
• Rakhaldas Banerjee's Contribution:
• Rakhaldas Banerjee was a historian and archaeologist who played a pivotal role in uncovering India's ancient history.
• His work at Mohenjodaro laid the foundation for further research into the Indus Valley Civilization.
• UNESCO Recognition:
• Mohenjodaro was designated as a UNESCO World Heritage Site for its universal cultural and historical value.
• It is a key site for understanding ancient urbanization and cultural practices.

The correct answer is Telangana.

Key Points

• Telangana became the 29th state of India on 2nd June 2014, following its bifurcation from Andhra Pradesh.
• The decision to create Telangana was taken after years of agitation and demands for a separate state by the people of the Telangana region.
• The state was formed under the Andhra Pradesh Reorganisation Act, 2014, which was passed by the Parliament of India.
• The capital of Telangana is Hyderabad, which it shares with Andhra Pradesh as a joint capital for 10 years (until 2024).
• Telangana is known for its rich cultural heritage, including iconic landmarks like Charminar and Golconda Fort, as well as its thriving IT industry.

Additional Information

• Background of Telangana Movement:
• The demand for Telangana as a separate state dates back to the 1950s, citing economic, cultural, and developmental neglect of the region.
• The Telangana Rashtra Samithi (TRS), led by K. Chandrashekar Rao (KCR), played a crucial role in the statehood movement.
• Andhra Pradesh Reorganisation Act, 2014:
• The Act outlined the creation of Telangana by dividing Andhra Pradesh into two states.
• It also addressed resource-sharing agreements, including water, power, and revenue distribution, between the two states.
• Geographical and Economic Importance:
• Telangana is rich in natural resources, particularly coal deposits in the Singareni Collieries.
• The state is a major hub for Information Technology (IT) and pharmaceuticals, with Hyderabad being a key contributor.
• Current Leadership:
• K. Chandrashekar Rao (KCR) became the first Chief Minister of Telangana after its formation in 2014.
• The TRS remains a dominant political force in the state.

The correct answer is Peacock.

Key Points

• The Indian Peacock (Pavo cristatus) is the National Bird of India, declared in 1963.
• It was chosen for its rich religious and cultural significance in Indian traditions and its majestic appearance.
• The peacock symbolizes grace, beauty, and elegance and is often associated with Lord Krishna in Hindu mythology.
• This bird is native to the Indian subcontinent and is commonly found in forests, farmlands, and near human settlements.
• The Indian Peacock is a protected species under Schedule I of the Wildlife Protection Act, 1972, ensuring its conservation.

Additional Information

• Scientific Classification: The Indian Peacock belongs to the family Phasianidae, and its scientific name is Pavo cristatus.
• Physical Features: The male peacock is known for its vibrant blue-green plumage and a long, iridescent tail adorned with eye-like patterns.
• Peahen: The female counterpart, called a peahen, has a duller brown coloration for camouflage during nesting.
• Behavior: Peacocks are ground-dwelling birds that forage for food such as grains, insects, and small reptiles, but they roost in trees to avoid predators.
• Cultural Significance: The peacock has been an enduring motif in Indian art, poetry, and architecture, symbolizing prosperity, rain, and divine protection.

The correct answer is Kolkata - Khulna.

Key Points

• Maitri Express II is a passenger train service connecting Kolkata in India and Khulna in Bangladesh.
• The service was launched to strengthen bilateral ties and improve connectivity between India and Bangladesh.
• It was inaugurated on November 16, 2017, as a part of the ongoing initiatives to enhance cultural and economic exchanges between the two nations.
• The train operates on the Petrapole-Benapole border route, which is a significant trade and transit point between the two countries.
• It serves as the second cross-border train service after the Kolkata-Dhaka Maitree Express, which was the first train to connect India and Bangladesh after partition.

Additional Information

• Maitree Express:
• The Maitree Express is a passenger train service that connects Kolkata and Dhaka, launched in 2008.
• It was the first train to establish rail connectivity between India and Bangladesh since the partition in 1947.
• The service operates through the Gede-Darshana border.
• India-Bangladesh Connectivity:
• The governments of India and Bangladesh have been working on multiple cross-border projects to enhance connectivity, including rail, road, and waterways.
• Other notable rail services include the Bandhan Express (Kolkata-Khulna) and the Mitali Express (New Jalpaiguri-Dhaka).
• Petrapole-Benapole Border:
• This is the largest land port between India and Bangladesh, located in West Bengal on the Indian side and Jessore District on the Bangladeshi side.
• It handles a significant volume of passenger and cargo traffic between the two countries.
• Economic Impact:
• Rail connectivity has significantly boosted trade, tourism, and cultural exchange between India and Bangladesh.
• It has also facilitated the movement of goods and reduced transportation costs for businesses on both sides of the border.

The correct answer is Option 1.

 

Key Points

• The phrase "I regret to inform you that" is commonly used to introduce sad news, as it conveys a formal tone of regret or condolence.
• This opening is not typically used for acceptance, denial, or emergencies, as it sets the tone for delivering sorrowful or unfortunate information.
• The context of this phrase aligns with the delivery of sad news, making Option 1 the most appropriate answer.

Therefore, the correct answer is Option 1.

 

Example Sentence: "I regret to inform you that your application for the position has been unsuccessful."

 

Additional Information

• Option 2: A denial would typically begin with a phrase like "We regret to inform you that your request has been denied." While this is close in tone, the context of the given sentence leans towards sad news in general, not strictly denial.
• Option 3: An acceptance letter would usually begin with a positive tone, such as "We are pleased to inform you that..."
• Option 4: An emergency communication would likely begin with an urgent call to action, such as "Attention: This is an emergency..."
• Option 5: This option is not provided in the context of the question.

The correct answer is Option 4.

 

Key Points

• The primary issue in the sentence lies in part d.
• The phrase "avoids to speak" is incorrect because the verb "avoid" is followed by a gerund ("-ing" form) and not an infinitive ("to" form).
• The correct phrase should be "avoids speaking to me," ensuring grammatical correctness and proper usage.
• Thus, the error is located in part d of the sentence.

Therefore, the correct answer is Option 4.

 

Correct Sentence: "Another baffling change that I notice in him nowadays is that he avoids speaking to me."

 

Additional Information

• a: "Another baffling change" – This part of the sentence is grammatically correct and does not require any changes.
• b: "that I notice in him" – This part of the sentence is grammatically correct and does not require any changes.
• c: "nowadays is that he" – This part of the sentence is grammatically correct and does not require any changes.
• d: "avoids to speak to me." – This part of the sentence contains the error, as explained above.

The correct answer is: Option 1.

Key Points

• The word "abstract" means a summary or brief overview of the main points of a text or content. (सारांश)
• Example: The research paper began with an abstract summarising the key findings.
• The correct answer, "summary", refers to the concise representation of the main ideas or points from a larger text. (सारांश)
• Example: She wrote a summary of the novel to help her classmates understand the plot.
• Hence, the word "abstract" is synonymous with "summary" in this context.

Therefore, the correct answer is: Option 1.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Title (शीर्षक): The name of a book, composition, or other work.
• Example: The title of her essay was "The Impact of Climate Change."
• Plan (योजना): A detailed proposal for achieving something.
• Example: He presented his plan for improving the company's sales.
• Conclusion (निष्कर्ष): The final part of a text or speech, summarising or closing the discussion.
• Example: The conclusion of the meeting highlighted the need for immediate action.

The correct answer is option 4.

Key Points

To answer this question, let's break down each sentence to identify the grammatically and contextually correct ones:

• 1) To be intelligent is more essential than being hard-working.
• This sentence is not balanced in structure since it uses "to be" and "being" in comparison.
• 2) Being intelligent is more important than to be hard-working.
• This sentence also lacks parallel structure, mixing "being" and "to be."
• 3) For one to be intelligent is more important than being hard-working.
• This sentence is overly wordy and lacks a balanced structure, mixing "for one to be" and "being."
• 4) Being intelligent is more essential than being hard-working.
• This sentence is grammatically correct and maintains a balanced structure, comparing "being" with "being."
• This sentence is grammatically and contextually correct.

The correct answer is Option 2.

 

Key Points

• The sentence "Would you mind moving the car?" is a polite request because it uses courteous language to ask someone to perform an action.
• The phrase "would you mind" is commonly used to express politeness in English.
• It is not a query, advice, or suggestion because its primary purpose is to politely request an action.

Therefore, the correct answer is Option 2.

 

Additional Information

• Option 1: Query – A query is a question asked to gain information, but the sentence does not serve this purpose.
• Option 3: Advice – Advice suggests a course of action, but the sentence does not imply a recommendation or suggestion.
• Option 4: Suggestion – A suggestion proposes an idea, but the sentence is not structured to propose anything.
• Option 5: No error – This option does not apply here since the sentence is correctly categorized as a polite request.

The correct answer is 'by'.

 

Key Points

• The preposition "by" is commonly used to ask for the time according to someone's watch.
• It is a conventional way to ask and also implies checking the time with a watch or clock.
• Options 1, 3, and 4 are grammatically incorrect in this context.

Therefore, the correct answer is Option 2.

 

Complete Sentence: "What is the time by your watch?"

 

Additional Information

• Option 1: "in" is incorrect because it is not the appropriate preposition for this context.
• Option 3: "on" is incorrect because it is generally used for dates and days, not for asking time by watch.
• Option 4: "at" is incorrect because it is used to describe a specific point in time, not to ask about the time.

The correct answer is Option 4.

 

Key Points

• The primary issue in the sentence is the incorrect usage of the word "when" instead of "if".
• Using "if" suggests a condition that may or may not happen, which fits the intended meaning better.
• The correct phrase should be "but do not worry if I am late."
• Thus, the error is located in part D of the sentence.

Therefore, the correct answer is D.

 

Correct Sentence: "I will try to be on time but do not worry if I am late."

 

Additional Information

• A: "I will try" – This part of the sentence is grammatically correct and does not require any changes.
• B: "to be on time" – This part of the sentence is grammatically correct and does not require any changes.
• C: "but do not worry" – This part of the sentence is grammatically correct and does not require any changes.
• No error – This would be the correct option if there were no mistakes in the sentence, but there is an error in part D.

The correct answer is: Option 3 i.e., "Insignificant".

Key Points

• The word "humble" means having or showing a modest or low estimate of one's importance; not grand or important. (विनम्र या मामूली)
• Example: He came from humble beginnings and worked hard to achieve success.
• The word "insignificant" means something that is not important, large, or worth considering. (तुच्छ या महत्वहीन)
• Example: The error was so insignificant that it did not affect the outcome of the project.
• Hence, the correct answer is Option 3, as "insignificant" aligns with the intended meaning of "humble" in the given context.

Therefore, the correct answer is: Option 3.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Weak (कमज़ोर): Lacking physical strength or energy.
• Example: After being sick for a week, she felt weak and unable to work.
• Cowardly (कायर): Lacking courage or bravery.
• Example: His decision to run away from the problem was seen as cowardly.
• Meek (नम्र): Quiet, gentle, and submissive.
• Example: Despite his meek personality, he stood up for what was right.

The correct answer is 'twinkling'.

 

Key Points

• The word "twinkling" is the most appropriate to describe stars in the sky because it refers to the shimmering or flickering effect seen from Earth.
• The other options: "burning," "turning," and "tinkling" do not fit the context as accurately.

​Therefore, the correct answer is 'Option 3'.

Complete Sentence: One or two stars were still twinkling in the sky.

Additional Information

• Burning: refers to something on fire, which is not the correct description for stars visible in the sky.
• Turning: means rotating or changing direction, which does not fit the context here.
• Tinkling: refers to a light, clear ringing sound, which is unrelated to stars.

The correct answer is Option 1.

 

Key Points

• A complex sentence contains one independent clause and at least one dependent clause.
• In the given sentence, "The boys who wanted to play football" is the dependent clause, and "were disappointed when it rained" is the independent clause.
• The dependent clause provides additional information but cannot stand alone as a complete sentence.
• This combination of clauses makes the sentence complex.

Therefore, the correct answer is Option 1.

 

Explanation: A complex sentence is characterized by having at least one independent clause and one dependent clause. The sentence structure and the relationship between its clauses confirm it as complex.

 

Additional Information

• Option 2 (Compound Sentence): Compound sentences consist of two or more independent clauses joined by a coordinating conjunction (e.g., and, but, or). This is not the case here.
• Option 3 (Simple Sentence): A simple sentence contains only one independent clause and no dependent clauses. The given sentence has a dependent clause, making it complex.
• Option 4 (Mixed Sentence): There is no grammatical category called a "mixed sentence." This option is invalid.
• Option 5: This option is irrelevant and does not apply to the grammatical structure of the sentence.

The correct answer is: important.

Key Points

• The word "trivial" means something of little value or importance; it refers to things that are insignificant or unimportant. (तुच्छ)
• Example: The argument they had was about a trivial matter, not worth their time.
• "Important" refers to something that holds great value, significance, or attention; it is the opposite of trivial. (महत्वपूर्ण)
• Example: Attending the board meeting was important for finalising the yearly budget.
• Hence, we can infer that the opposite of 'trivial' is 'important'.

Therefore, the correct answer is: important.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Insignificant (महत्वहीन): Refers to something that lacks importance or value.
• Example: His contribution to the project was insignificant compared to others.
• Futile (व्यर्थ): Refers to something that is incapable of producing any useful result; pointless.
• Example: Trying to convince him was a futile effort.
• Fast (तेज़): Refers to something that moves quickly or at high speed.
• Example: She drives her car very fast on the highway.

The correct answer is: Option 2 (Herd).

Key Points

• The word "Group" refers to a number of people, animals, or things that are located, gathered, or classed together. (समूह)
• A "Herd" is a large group of animals, especially hoofed mammals, that live, feed, or migrate together. (झ��ंड)
• Example: A herd of elephants was seen near the riverbank.
• Hence, the correct collective term for a group of elephants is "Herd" (झुंड).

Therefore, the correct answer is: Option 2 (Herd).

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Collection (संग्रह): A group of objects or works to be seen, studied, or kept together.
• Example: He has a vast collection of ancient coins.
• School (झुंड): A group of fish or aquatic animals swimming together.
• Example: The school of fish swam gracefully in the clear water.
• Litter (कूड़ा/जन्मा हुआ झुंड): Refers to trash or waste scattered about OR the offspring of certain animals born at one time.
• Example: The cat gave birth to a litter of kittens.

The correct answer is option 4.

Key Points

To answer this question, let's break down each sentence to identify the grammatically and contextually correct one:

• Option 1: Bhupen do not know the way.
• This sentence is incorrect because "do not" should be replaced with "does not" to agree with the singular subject "Bhupen".
• Option 2: Bhupen do not knows the way.
• This sentence is incorrect because "do not knows" is grammatically incorrect; the correct form is "does not know".
• Option 3: Bhupen did not knows the way.
• This sentence is incorrect because "did not knows" is grammatically incorrect; the correct form is "did not know".
• Option 4: Bhupen does not know the way.
• This sentence is correct because it uses "does not" with the singular subject "Bhupen" and "know" in the base form.

Therefore, the correct answer is option 4: "Bhupen does not know the way."

The correct answer is 'gargle'.

 

Key Points

• The word "gargle" refers to the action of washing one’s throat and mouth with a liquid, typically a medicinal one.
• Rahim’s doctor advised him to gargle as it is a common remedy for relieving a sore throat.
• The other options: "babble," "giggle," and "gurgle" do not fit the context appropriately.

​Therefore, the correct answer is 'Option 2'.

Complete Sentence: Rahim's doctor advised him to gargle as a cure for his sore throat.

Additional Information

• Babble: to talk rapidly and continuously in a foolish, excited, or incomprehensible way.
• Giggle: to laugh lightly in a silly manner.
• Gurgle: to make a bubbling sound, often resembling a liquid flowing irregularly.

The correct answer is Option 3.

 

Key Points

• The phrasal verb make out is used to indicate understanding or deciphering something that is unclear or difficult to perceive.
• In the given sentence, the speaker is unable to understand what is written, so make out is the appropriate replacement.
• Other options do not fit the context:
• Hold on means to wait or pause and is irrelevant here.
• Give out means to distribute or emit something and does not align with the meaning of the sentence.
• Give away means to reveal or donate something, which is also unrelated to the context.

Therefore, the correct phrasal verb to replace "understand" is make out.

 

Correct Sentence: "I cannot make out what is written here."

 

Additional Information

• Phrasal verbs are combinations of verbs and prepositions or adverbs that create unique meanings.
• It is crucial to choose the correct phrasal verb based on the context of the sentence.
• Practicing various phrasal verbs will enhance comprehension and communication skills.

Given:

The length of a rectangle increases by 15%, and the breadth decreases by 15%. We need to find the percentage change in the area of the rectangle.

Formula used:

Percentage change in area = (Increase in length × Decrease in breadth)/100

Calculation:

Let the original length = 100 and original breadth = 100 (assuming original area = 100 × 100 = 10,000)

New length = 100 + 15 = 115

New breadth = 100 - 15 = 85

New area = 115 × 85

⇒ New area = 9775

Change in area = New area - Original area

⇒ Change in area = 9775 - 10,000

⇒ Change in area = -225

Percentage change in area = (Change in area / Original area) × 100

⇒ Percentage change in area = (-225 / 10,000) × 100

⇒ Percentage change in area = -2.25% = $2 \frac{1}{4}$%

∴ The correct answer is option (4).

Given:

The three numbers are 1.7, 0.51, and 0.153

Formula used:

H.C.F. of fractions: H.C.F. = $\dfrac{\text{H.C.F. of Numerators}}{\text{L.C.M. of Denominators}}$

Calculations:

Convert the given decimal numbers into fractions:

⇒ 1.7 = $\dfrac{17}{10}$

⇒ 0.51 = $\dfrac{51}{100}$

⇒ 0.153 = $\dfrac{153}{1000}$

Now, we need to find the H.C.F. of $\dfrac{17}{10}$, $\dfrac{51}{100}$, and $\dfrac{153}{1000}$.

H.C.F. of Numerators (17, 51, 153):

Prime factorization of 17 = 17

Prime factorization of 51 = 3 × 17

Prime factorization of 153 = 3 × 51 = 3 × 3 × 17 = 3² × 17

The common factor with the lowest power is 17.

⇒ H.C.F. (17, 51, 153) = 17

L.C.M. of Denominators (10, 100, 1000):

10 = 10¹

100 = 10²

1000 = 10³

The L.C.M. of powers of the same base is the highest power.

⇒ L.C.M. (10, 100, 1000) = 1000

⇒ H.C.F. = $\dfrac{17}{1000}$

⇒ H.C.F. = 0.017

∴ The H.C.F. of the three numbers 1.7, 0.51, and 0.153 is 0.017.

Given:

Loss percentage = 10%

Profit percentage = 8%

Additional selling price = ₹54

Formula used:

Cost Price (CP) = $\frac{Selling Price}{1 - \frac{Loss\%}{100}}$

Selling Price with Profit = $\text{CP} × (1 + \frac{\text{Profit\%}}{100})$

Calculation:

Let the selling price at 10% loss be ₹x.

Cost Price (CP) = $\frac{x}{1 - \frac{10}{100}}$

⇒ CP = $\frac{x}{0.9}$

Selling price with 8% profit = CP × $(1 + \frac{8}{100})$

⇒ Selling price with profit = $\frac{x}{0.9} × 1.08$

Given, Selling price with profit = Selling price at loss + ₹54

⇒ $\frac{x}{0.9} × 1.08 = x + 54$

⇒ $\frac{1.08x}{0.9} = x + 54$

⇒ $\frac{1.08x}{0.9} - x = 54$

⇒ $\frac{1.08x - 0.9x}{0.9} = 54$

⇒ $\frac{0.18x}{0.9} = 54$

⇒ $x = 54 × \frac{0.9}{0.18}$

⇒ x = 54 × 5 = 270

∴ The selling price of the watch is ₹270.

Given:

Cost Price (CP) = ₹620

Marked Price (MP) is 25% above CP.

Discount = 15%

Formula used:

MP = CP × $\frac{100}{100 - \text{Discount \%}}$

Selling Price (SP) = MP × $\frac{100 - \text{Discount \%}}{100}$

Profit % = $\frac{\text{SP - CP}}{\text{CP}} \times 100$

Calculations:

MP = ₹620 × $\frac{100}{100 - 25}$

⇒ MP = ₹620 × $\frac{100}{75}$

⇒ MP = ₹826.67

SP = MP × $\frac{100 - 15}{100}$

⇒ SP = ₹826.67 × $\frac{85}{100}$

⇒ SP = ₹702.67

Profit % = $\frac{\text{SP - CP}}{\text{CP}} \times 100$

⇒ Profit % = $\frac{702.67 - 620}{620} \times 100$

⇒ Profit % = $\frac{82.67}{620} \times 100$

⇒ Profit % = $13\frac{1}{3}$%

∴ The correct answer is option (2).

Given:

16 machines take 27 days to make 1000 parts.

After adding 2 more machines (total 18 machines).

Formula used:

Work = Machines × Days

For constant work, $\text{Machines}_1 × \text{Days}_1 = \text{Machines}_2 × \text{Days}_2$

Calculation:

$\text{Machines}_1 × \text{Days}_1 = \text{Machines}_2 × \text{Days}_2$

⇒ 16 × 27 = 18 × Days

⇒ Days = $\frac{16 × 27}{18}$

⇒ Days = 24

Reduction in days = 27 - 24 = 3 days

∴ The correct answer is option (1).

Given:

Sum of three fractions = $2 \frac{11}{24}$

Ratio of the largest and the smallest fractions = 7 : 6

Ratio is $\frac{1}{3}$ more than the middle fraction.

Calculations:

Let the three fractions be S (Smallest), M (Middle), and L (Largest).

S + M + L = $2 \frac{11}{24} = \frac{2 \times 24 + 11}{24} = \frac{48 + 11}{24} = \frac{59}{24}$

$\dfrac{L}{S} = \dfrac{7}{6}$

⇒ L = $\dfrac{7}{6}S$

The ratio $\dfrac{7}{6}$ is $\frac{1}{3}$ more than the middle fraction:

⇒ $\dfrac{7}{6} = M + \dfrac{1}{3}$

⇒ M = $\dfrac{7}{6} - \dfrac{1}{3}$

⇒ M = $\dfrac{7}{6} - \dfrac{2}{6}$

⇒ M = $\dfrac{5}{6}$

Now, substitute M = $\dfrac{5}{6}$ into the sum equation:

S + $\dfrac{5}{6}$ + L = $\dfrac{59}{24}$

S + L = $\dfrac{59}{24} - \dfrac{5}{6}$

S + L = $\dfrac{59}{24} - \dfrac{5 \times 4}{6 \times 4}$

S + L = $\dfrac{59}{24} - \dfrac{20}{24}$

⇒ S + L = $\dfrac{39}{24}$

Now, L = $\dfrac{7}{6}S$ into the equation S + L = $\dfrac{39}{24}$:

S + $\dfrac{7}{6}S = \dfrac{39}{24}$

⇒ 6S + 7S = $\dfrac{39}{24} \times 6$

⇒ 13S = $\dfrac{39}{4}$

⇒ S = $\dfrac{39}{4 \times 13}$

⇒ S = $\dfrac{3}{4}$

⇒ L = $\dfrac{7}{6} \times \dfrac{3}{4}$

⇒ L = $\dfrac{7 \times 1}{2 \times 4}$

⇒ L = $\dfrac{7}{8}$

The three fractions are S = $\dfrac{3}{4}$, M = $\dfrac{5}{6}$, L = $\dfrac{7}{8}$.

∴ The correct answer is option 4.

Given:

Value of (4)^0.5 × (0.5)⁴ × 2⁴ is?

Formula used:

For simplification, use the laws of exponents:

a^m × aⁿ = a^m+n

n^p = √n when p = 0.5

Calculation:

(4)^0.5 × (0.5)⁴ × 2⁴

⇒ (√4) × (0.5)⁴ × 2⁴

⇒ 2 × (0.5)⁴ × 2⁴

⇒ 2 × (1/2)⁴ × 2⁴

⇒ 2 × (1/16) × 2⁴

⇒ (2 × 2⁴) / 16

⇒ 2

∴ The correct answer is 2.

Given:

5 bells ring at intervals of 9 secs, 6 secs, 4 secs, 10 secs, and 8 secs.

Formula used:

Number of times bells ring together in 1 hour = $\dfrac{\text{Total seconds in 1 hour}}{\text{LCM of intervals}}$ + 1

(including the first ring).

Calculation:

Intervals: 9, 6, 4, 10, 8

LCM of 9, 6, 4, 10, 8:

⇒ Prime factorization:

9 = 3², 6 = 2 × 3, 4 = 2², 10 = 2 × 5, 8 = 2³

⇒ LCM = 2³ × 3² × 5 = 8 × 9 × 5 = 360 secs

Total seconds in 1 hour = 60 × 60 = 3600 secs

⇒ Number of times bells ring together in 1 hour = $\dfrac{3600}{360}$ + 1

⇒ Number of times = 10 + 1 = 11

∴ The correct answer is option (1).

Given:

A number leaves remainders 4, 5, 6, 7, 8 when divided by 5, 6, 7, 8, 9 respectively.

Formula used:

If a number N leaves a remainder (divisor - k) when divided by the divisor, then the number is of the form (L.C.M. of divisors) × n - k, where k is the common difference (divisor - remainder).

Calculations:

Let the number be N.

When N is divided by 5, remainder is 4. (5 - 4 = 1)

When N is divided by 6, remainder is 5. (6 - 5 = 1)

When N is divided by 7, remainder is 6. (7 - 6 = 1)

When N is divided by 8, remainder is 7. (8 - 7 = 1)

When N is divided by 9, remainder is 8. (9 - 8 = 1)

The difference between the divisor and the remainder is constant and equal to 1 in all cases.

The smallest such number will be (L.C.M. of 5, 6, 7, 8, 9) - 1.

Find the L.C.M. of 5, 6, 7, 8, 9:

Prime factorization:

5 = 5

6 = 2 × 3

7 = 7

8 = 2³

9 = 3²

L.C.M. = 2³ × 3² × 5 × 7

L.C.M. = 2520

The smallest number is L.C.M. - 1:

⇒ N = 2520 - 1

⇒ N = 2519

∴ The smallest number is 2519.

Given:

Original Price = ₹500

Single Discount = 40%

Successive Discounts = 36% and 4%

Formula used:

Single Discount Price = Original Price × (1 - Discount/100)

Successive Discount Price = Original Price × (1 - First Discount/100) × (1 - Second Discount/100)

Difference = Single Discount Price - Successive Discount Price

Calculation:

Single Discount Price = 500 × (1 - 40/100)

⇒ Single Discount Price = 500 × 0.6 = ₹300

Successive Discount Price = 500 × (1 - 36/100) × (1 - 4/100)

⇒ Successive Discount Price = 500 × 0.64 × 0.96

⇒ Successive Discount Price = ₹307.20

Difference = ₹300 - ₹307.20

⇒ Difference = ₹7.20

∴ The correct answer is option (2).

Given:

A contributes ₹1,200 for 5 months

B contributes ₹750 for 4 months

Total profit = ₹450

Formula used:

Profit share is proportional to (Contribution × Time).

Calculation:

A's share = ₹1,200 × 5 = ₹6,000

B's share = ₹750 × 4 = ₹3,000

Ratio of profits = A's share : B's share

⇒ Ratio = ₹6,000 : ₹3,000

⇒ Ratio = 6 : 3 = 2 : 1

∴ The correct answer is option 3.

Given:

Recurring decimal = $0.841 \overline{81}$

Formula used:

Algebraic method for converting recurring decimals to fractions.

Calculations:

Let X = $0.841 \overline{81}$ --- (1)

⇒ 1000X = $841. \overline{81}$ --- (2)

Now, multiply equation (2) by 100 (since there are 2 repeating digits) to shift one block of repeating digits past the decimal point:

⇒ 100 × 1000X = 100 × $841. \overline{81}$

⇒ 100000X = $84181. \overline{81}$ --- (3)

Subtract equation (2) from equation (3) to eliminate the repeating part:

⇒ 100000X - 1000X = $84181. \overline{81}$ - $841. \overline{81}$

⇒ 99000X = 84181 - 841

⇒ 99000X = 83340

⇒ X = $\dfrac{83340}{99000}$

⇒ X = $\dfrac{8334}{9900}$

⇒ X = $\dfrac{4167}{4950}$

⇒ X = $\dfrac{1389}{1650}$

⇒ X = $\dfrac{463}{550}$

The fraction in its lowest terms is $\dfrac{463}{550}$.

Numerator = 463

Denominator = 550

Difference between the denominator and the numerator = Denominator - Numerator

⇒ Difference = 550 - 463

⇒ Difference = 87

∴ The difference between the denominator and the numerator is 87.

Given:

14 persons can sink a tubewell in 12 days.

Time required to sink the tubewell = 8 days.

Formula used:

Work = Number of persons × Number of days

To sink the tubewell in 8 days, we calculate the total number of persons required.

Calculation:

Work done by 14 persons in 12 days = Work done by total persons required in 8 days.

⇒ 14 × 12 = Total persons required × 8

⇒ Total persons required = (14 × 12) ÷ 8

⇒ Total persons required = 21

Extra persons required = Total persons required - Initial persons

⇒ Extra persons required = 21 - 14

⇒ Extra persons required = 7

∴ The correct answer is option (2).

Given:

Successive discounts: 10%, 20%, and 30%

Formula used:

Equivalent discount = 1 - (1 - d₁) × (1 - d₂) × (1 - d₃)

Where d₁, d₂, and d₃ are successive discounts expressed as decimals.

Calculations:

Equivalent discount = 1 - (1 - 0.10) × (1 - 0.20) × (1 - 0.30)

⇒ Equivalent discount = 1 - (0.90 × 0.80 × 0.70)

⇒ Equivalent discount = 1 - 0.504

⇒ Equivalent discount = 0.496

∴ The correct answer is option (2).

Given:

Length of train (L_train) = 70 metres

Length of bridge (L_bridge) = 105 metres

Speed of train (S) = 75 kmph

Formula used:

Total Distance (D) = Length of train + Length of bridge

Time (T) = $\dfrac{\text{Total Distance}}{\text{Speed}}$

Calculations:

⇒ S = 75 kmph = 75 × $\dfrac{5}{18}$ m/s

⇒ S = $\dfrac{25 \times 5}{6}$ m/s (dividing 75 and 18 by 3)

⇒ S = $\dfrac{125}{6}$ m/s

⇒ Total Distance = L_train + L_bridge

⇒ Total Distance = 70 m + 105 m = 175 m

⇒ Time = $\dfrac{\text{Total Distance}}{\text{Speed}}$

⇒ Time = $\dfrac{175}{\frac{125}{6}}$

⇒ Time = $\dfrac{175 \times 6}{125}$

⇒ Time = $\dfrac{7 \times 6}{5}$

⇒ Time = $\dfrac{42}{5}$ seconds = $8 \frac{2}{5}$ sec

∴ The time taken by the train to cross the bridge is $8 \frac{2}{5}$ seconds.