3,238 previous year UPSC Prelims (GS Paper-I) questions, from 1995 to 2025, each with the correct answer and a full explanation. Filter by subject, chapter or year.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
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UPSC 2001Geography · Indian Geography
Q2641. Consider the following statements regarding power sector in India: 1. The installed capacity of power generation is around 95000 MW 2. Nuclear plants contribute nearly 15% of total power generation. 3. Hydroelectricity plants contribute nearly 40% of total power generation 4. Thermal plants at present account for nearly 80% of total power generation Which of the statements is/are correct?
Explanation
Statement 1 is correct: As of 2001, India’s total installed power generation capacity was approximately 95,000 MW, according to reports from the Central Electricity Authority (CEA). This included contributions from thermal, hydroelectric, nuclear, and renewable energy sources. As of June 2023-24, the installed capacity has risen to around 146,190 MW.
Statement 2 is incorrect: As of 2001 and even today, nuclear power contributes only around 1-3% (not 15%) of the total electricity generation. The installed nuclear capacity is approximately 7,480 MW, which is a minor fraction of the total energy mix. India’s nuclear expansion has been slow due to regulatory challenges, safety concerns, and the high cost of nuclear plants.
Statement 3 is incorrect: Hydroelectricity accounted for about 25-30% of India’s electricity generation in 2001, not 40%. While hydroelectricity was once a dominant source of power in India, its share has been gradually declining as thermal and renewable energy sources expanded. Currently, hydroelectricity accounts for only about 10-15% of India’s total power generation.
Statement 4 is incorrect: In 2001, thermal power plants (coal, oil, and natural gas) contributed about 65-70% of India’s total power generation, not 80%. Thermal power remains the back-bone of India’s energy sector but has never accounted for such a high percentage. Currently, thermal power contributes around 70-75% of total power generation. While close to 80%, the exact figure fluc-tuates due to the increasing contribution of renewable energy sources like solar and wind.
Additional insight:
India’s energy mix is led by thermal power (70-75%), with coal contributing 50-55%. Renewables have grown to 25-30%, with solar (70+ GW) and wind (45+ GW) playing key roles. Hydroelectricity (10-15%) and nuclear power (2-3%, 7,480 MW) add to the mix. The government targets 500 GW of non-fossil capacity by 2030, focusing on renewables, nuclear expansion, and energy storage for a cleaner future.
UPSC 2001Geography · Indian Geography
Q2642. The approximate age of the Aravallis range is:
Explanation
The Aravalli Range, one of the world’s oldest mountain systems, is estimated to be around 670 million years old based on geological studies and radiometric dating techniques. Some researchers even suggest its origins could date back further, making it as old as 2-4 billion years, but its prominent development and erosion cycles place its approximate age at 670 million years.
Additional insight:
The Aravalli Range, formed during the Proterozoic Era through tectonic collisions that created the Aravalli-Delhi Fold Belt, has been eroded over millions of years into its present low-lying form. Stretching approximately 700 km across Rajasthan, Haryana, Delhi, and Gujarat, the range is geologically rich, with metamorphic and igneous rocks containing valuable minerals like lead, zinc, marble, and mica. Ecologically, it serves as a biodiversity hotspot and acts as a natural barrier against the spread of the Thar Desert. Culturally, the Aravallis house ancient forts, temples, and landmarks such as Mount Abu and the Dilwara Temples, making them historically and environmentally significant.
UPSC 2001Geography · Indian Geography
Q2643. Consider the following statements regarding environmental issues in India:
Explanation
Statement 1 is correct: The Gulf of Mannar Biosphere Reserve, located between India and Sri Lanka, is one of India’s 18 biosphere reserves. Established in 1989, it is the first marine biosphere reserve in South and Southeast Asia. Known for its rich marine biodiversity, especially coral reefs, it supports over 1,10,000 families from 268 fishing villages. It also lies along the Central Asian bird migratory flyway.
Statement 2 is correct: The Ganga Action Plan (GAP) Phase II, launched in 1993, aimed to expand pollution control efforts to the Ganga’s tributaries. In 1995, it was merged with the National River Conservation Plan (NRCP) to include other polluted rivers across India. The NRCP focused on sewage treatment, riverfront development, afforestation, and pollution control in 190 towns across 16 states. Later, in 2014, the Namami Gange Programme was launched to further strengthen Ganga rejuvenation efforts.
Statement 3 is correct: The National Museum of Natural History, opened in 1978, in New Delhi plays a significant role in promoting environmental education and awareness. It offers various programs, exhibitions, and activities to impart non-for-mal education on environment and conservation.
Statement 4 is correct: ENVIS (Environmental Information System) was launched in 1982 by the Ministry of Environment, Forest and Climate Change (MoEFCC) as a decentralized system for collecting and disseminating environmental information across various thematic areas.
UPSC 2001Polity · Schedules
Q2644. Which one of the following statements correctly describes the Fourth Schedule of the Constitution of India?
Explanation
The Fourth Schedule of the Indian Constitution specifies the allocation of seats in the Rajya Sabha, detailing the representation of each state and union territory in the Council of States. Options (a), (b) and (c) are incorrect:
The Seventh Schedule of the Indian Constitution contains the scheme of distribution of powers between the Union and the States. It is divided into three lists: the Union List, the State List, and the Concurrent List. recognized languages. The Fifth and sixth Schedule of the Indian Constitution contains the provision regarding the administration of tribal areas
UPSC 2001Polity · Schedules
Q2645. If a new state of the Indian Union is to be created, which one of the following schedules of the Constitution must be amended?
Explanation
A new state is created by Parliament under Article 2 or Article 3. Article 4 specifies that creating a state does not require a constitutional amendment. However, according to article 1 the First Schedule, listing states and their boundaries, must be amended while a new state of the Union to be created.
UPSC 2001General Knowledge · General Awareness: India
Q2646. The earlier name of the WTO was:
Explanation
The World Trade Organization (WTO) was established in 1995, replacing the General Agreement on Tariffs and Trade (GATT), which had been in place since 1948 to regulate international trade. Options (a), (c), and (d) are incorrect UNCTAD (United Nations Conference on Trade and Development) - Established in 1964, it promotes trade, investment, and development in developing countries. The United Nations Conference on Trade and Development (UNCTAD) has been rebranded as "UN Trade and Development". UNIDO (United Nations Industrial Development Organization) - Founded in 1966, it focuses on promoting industrial development in developing nations. OECD (Organisation for Economic Cooperation and Development) - Established in 1961, it is an international economic organization that promotes policies for economic growth and trade.
UPSC 2001General Knowledge · General Awareness: India
Q2647. The largest number of Buddhist is found in:
Explanation
Maharashtra has the largest Buddhist population in India. According to the census of India 2011, the Buddhist population in India is around 8.4 million which is around 0.7% of the total population, which makes Buddhism a minority religion in India. Maharashtra’s population comprises 5.81% of Buddhist.
UPSC 2001General Knowledge · General Awareness: India
Q2648. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I (Institutes)
List-II (Location)
A. Central Institute medicinal and Aromatic of Plants
1. Chandigarh
B. Centre for DNA Finger Printing and Diagnostics
2. Hyderabad
C. Institute of Microbial Technology
3. New Delhi
D. National Institute of Immunology
4. Lucknow
Explanation
Code (b) is correct Central Institute of Medicinal and Aromatic Plants (CIMAP) - Lucknow, Uttar Pradesh Specializes in research on medicinal and aromatic plants for pharmaceuticals and agriculture. Centre for DNA Fingerprinting and Diagnostics (CDFD) - Hyderabad, Telangana Focuses on DNA fingerprinting, genetic diagnostics, and research in molecular biology. Institute of Microbial Technology (IMTECH) - Chandigarh Engaged in microbial research, biotechnology, and industrial microbiology. National Institute of Immunology (NII) - New Delhi Conducts advanced research in immunology, vaccine development, and disease prevention.
UPSC 2001General Knowledge · General Awareness: India
Q2649. Consider the following statements about the minorities India: 1. The Government of India has notified five communities, namely, Muslims, Sikhs, Christians, Buddhists and Zoroastrians as Minorities 2. The National Commission for Minorities was given statutory status in 1993 3. The smallest religious minority in India are the Zoroastrians 4. The Constitution of India recognizes and protects religious and linguistic minorities Which of these statements are correct?
Explanation
Statement 1 is correct: Initially, five religious communities, Muslims, Christians, Sikhs, Buddhists, and Zoroastrians (Parsis), were notified as minority communities by the Union Government under the National Commission for Minorities Act, 1992 in October 1993. Further, with the 2014 notification, Jains were also notified as another minority community. Since the question was asked in 2001 so according to that year this statement is correct.
Statement 2 is correct: The National Commission for Minorities (NCM) was given statutory status in 1993 to safeguard minority rights.
Statement 3 is incorrect: The smallest religious minority in India is the Jews, not Zoroastrians.
Statement 4 is correct: The Constitution of India recognizes and protects religious and linguistic minorities under Articles 29 and 30.
UPSC 2001General Knowledge · General Awareness: India
Q2650. Consider the following organizations: 1. Atomic Minerals Directorate for Research and Exploration 2. Heavy Water Board 3. Indian Rare Earths Limited 4. Uranium Corporation of India Which of these is/are under the Department of Atomic Energy?
Explanation
All four organizations operate under the Department of Atomic Energy (DAE), Government of India, contributing to nuclear research, fuel processing, and resource exploration. Atomic Minerals Directorate for Research and Exploration (AMD) - Hyderabad, Telangana - Conducts exploration of uranium and other atomic minerals. Heavy Water Board (HWB) - Mumbai, Maharashtra - Produces heavy water (DO) for nuclear reactors. Indian Rare Earths Limited (IREL) - Mumbai, Maharashtra - Extracts and processes rare earth elements and minerals like monazite. Uranium Corporation of India (UCIL) - Jaduguda, Jharkhand - Responsible for uranium mining and processing in India.
Additional insight:
The Department of Atomic Energy (DAE) was set up under the direct charge of the Prime Minister through a Presidential Order on August 3, 1954. Accordingly, the Atomic Energy Commission with full executive and financial powers was set up by the Government through a resolution dated March 1, 1958. The Atomic Energy Commission is responsible for formulating the policy of the Department of Atomic Energy.
Answer key for these questions
Q
UPSC year
Correct answer
2641
2001
(a) 1 only
2642
2001
(d) 670 million year
2643
2001
(b) 1, 2, 3 and 4
2644
2001
(d) It allocates seats in the Council of States
2645
2001
(a) First
2646
2001
(b) GATT
2647
2001
(c) Maharashtra
2648
2001
(b) A-4; B-2; C-1; D-3
2649
2001
(d) 1, 2 and 4
2650
2001
(d) 1, 2, 3 and 4
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This page covers 3238 previous year UPSC Prelims GS Paper-I questions on UPSC Prelims GS Paper-I, asked from 1995 to 2025. Each has the correct answer and an explanation.
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