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Science and Technology Mixed Practice — MCQs with Answers (Set 1)

A mixed set of 25 Science and Technology MCQs on smaller topics that have no set of their own. Each answer links to its topic Article.

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Q1. PYQ Which one among the following institutes was established first? [CAPF (ACs) 2025]

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Answer: C

The Indian Institute of Petroleum, Dehradun was established in 1960, ahead of IIT Delhi (1961) and IIM Ahmedabad (1961). IISER Pune came much later, in 2006.

Related topics: Indian Institutes of Technology (IITs)

Q2. PYQ Consider the following statements: 1. GPS uses signals from a network of satellites to determine a position on the Earth. 2. The GPS receiver calculates the distances from satellites to triangulate the exact location by the use of latitude. Which of the statements given above is/are correct? [CAPF (ACs) 2026]

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Answer: A

GPS genuinely uses a satellite network to find location. But it works by trilateration, measuring distances to at least three satellites, not by using latitude directly.

Related topics: Cartography, GPS and Space Technology in Geography

Q3. PYQ GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is/are correct in respect of GAGAN? 1. It is designed to provide additional accuracy and integrity. 2. It will allow more uniform and high quality air traffic management. 3. It will provide benefits only in aviation but not in other modes of transportation. Select the correct answer using the code given below. [UPSC CSP 2025]

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Answer: D

GAGAN provides additional accuracy and integrity (Statement 1 correct) and enables more uniform, high-quality air traffic management (Statement 2 correct), per AAI’s official description. But it is not aviation-only — GAGAN also benefits maritime navigation, road transport, and railways (Statement 3 wrong).

Related topics: GAGAN: India’s Satellite-Based Augmentation System

Q4. PYQ With reference to India’s defence, consider the following pairs: I. Dornier-228 — Maritime patrol aircraft II. IL-76 — Supersonic combat aircraft III. C-17 Globemaster III — Military transport aircraft How many of the pairs given above are correctly matched? [UPSC CSP 2025]

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Answer: B

The answer is only two. The Coast Guard calls the Dornier 228 a maritime patrol aircraft, so pair I is correct. PIB’s induction release says India needed a strategic airlift platform and bought the C-17 for it, so pair III is correct. The IL-76 is a military transport, not a supersonic combat aircraft, so pair II is wrong.

Related topics: Indian Military Transport and Maritime Patrol Aircraft

Q7. For which period did INCOIS give a 70 to 90 per cent chance of El Nino persisting?

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Answer: D

The Lok Sabha reply of 5 August 2026 cited a 70 to 90 per cent chance for June 2026 to February 2027.

Related topics: INCOIS

Q8. An AI data centre needs environmental clearance by itself only if:

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Answer: B

Clearance applies when it is part of a building project over 20,000 sq m or a township project of 50 hectares or more.

Related topics: AI Infrastructure in India

Q9. India’s BioE3 Policy aims to take the national bioeconomy to what size by 2030?

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Answer: D

The BioE3 Policy, approved on 24 August 2024, targets a $300 billion bioeconomy by 2030. It stood at over $130 billion in 2024.

Related topics: BioE3 Policy

Q10. The Genetic Engineering Appraisal Committee (GEAC) is constituted under which law?

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Answer: C

GEAC is constituted under the Environment (Protection) Act, 1986. UPSC CSP 2015 tested this link.

Related topics: Genetic Engineering Appraisal Committee (GEAC)

Q11. Under BioE3, how many sectoral verticals are prioritised for the biomanufacturing hubs?

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Answer: C

The correct answer is six. They include bio-based chemicals, functional foods, precision biotherapeutics, climate resilient agriculture, biofuels and marine and space research. Memory hook: six verticals, six areas to name.

Related topics: Bioeconomy Roadmap 2035

Q12. Which of the following is a Bio-enabler under the BioE3 Policy?

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Answer: A

The correct answer is Bio-AI Hubs. Bio-enablers are biofoundries, biomanufacturing hubs and Bio-AI hubs. They support discovery and translational research across the sectors. Memory hook: foundry, hub, AI.

Related topics: BioE3 Policy

Q13. Where did India host the 46th Antarctic Treaty Consultative Meeting?

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Answer: C

The correct answer is Kochi. India also hosted the Committee for Environmental Protection meeting there. Memory hook: Kochi welcomed the Treaty.

Related topics: India’s Antarctic Research Stations

Q14. India’s two active research stations in Antarctica today are Maitri and:

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Answer: B

The correct answer is Bharati. It was built in 2012 in the Larsemann Hills. Dakshin Gangotri is no longer active, and Himadri is in the Arctic. Memory hook: Maitri and Bharati, friendship and India.

Related topics: India’s Antarctic Research Stations

Q15. Which agency is the nodal body for India’s annual expeditions to Antarctica and the Arctic?

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Answer: B

The correct answer is NCPOR, the National Centre for Polar and Ocean Research. Memory hook: P for Polar, P for programme.

Related topics: India’s Antarctic Research Stations

Q16. India became a Consultative Party to the Antarctic Treaty in which year?

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Answer: B

The correct answer is 1983. India signed the Treaty on 19 August 1983 and got consultative status on 12 September 1983. Memory hook: treaty and first station came the same year.

Related topics: India’s Antarctic Research Stations

Q17. Maitri station stands on which ice-free land about 100 km inland from the coast?

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Answer: C

The correct answer is Schirmacher Oasis. Maitri became operational in 1989. Bharati stands in the Larsemann Hills. Memory hook: Maitri is in the Oasis.

Related topics: India’s Antarctic Research Stations

Q18. India’s first permanent Antarctic station, set up in 1983, was called:

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Answer: C

The correct answer is Dakshin Gangotri. Ice later disabled it, and Maitri replaced it. Himadri is in the Arctic. Memory hook: first station, first ice victim.

Related topics: India’s Antarctic Research Stations

Q19. Which ship carried India’s first Antarctic expedition, Gangotri 1, from Goa in December 1981?

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Answer: A

The correct answer is Polar Circle. It was a chartered Norwegian icebreaker that carried 21 members. Memory hook: the Circle carried the first team.

Related topics: India’s Antarctic Research Stations

Q20. Which treaty of 1963 did India recall it helped usher in?

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Answer: D

The statement said India was in the vanguard of nations that ushered in the Partial Test Ban Treaty in 1963.

Related topics: Nuclear Tests of India (Pokhran I & II)

Q21. How many underground nuclear tests did India announce on 11 May 1998?

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Answer: B

The Prime Minister announced three tests at 1545 hrs. Two more followed on 13 May.

Related topics: Nuclear Tests of India (Pokhran I & II)

Q22. Who chairs the Executive Council of the Nuclear Command Authority?

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Answer: A

The Executive Council is chaired by the National Security Advisor and carries out the Political Council’s directives.

Related topics: India’s Nuclear Doctrine

Q23. Which body is the sole one that can authorise the use of nuclear weapons in India?

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Answer: C

The Political Council is chaired by the Prime Minister and is the sole body with this power.

Related topics: India’s Nuclear Doctrine

Q24. On 4 January 2003, which body shared the main points of India’s nuclear doctrine with the public?

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Answer: B

The Cabinet Committee on Security met that day. It reviewed progress and chose to share the doctrine.

Related topics: India’s Nuclear Doctrine

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