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4392 Previous Year Questions • 2016–2026 • Prelims, Mains, Essay, Optionals
Topic:[GS-III] Science and Technology- developments and their applications and effects in everyday life.43 PYQs
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Mains - GS-III
8 shown2026•Mains•GS-III•Q.6
Distinguish between a Fast Breeder Reactor (FBR) and a thermal nuclear reactor. In the context of first indigenously developed prototype FBR at Kalpakkam, explain the term 'criticality'. What are its implications for clean energy future of our country?
GS-III
2026•Mains•GS-III•Q.16
What is agentic Artificial Intelligence (AI)? Explain its working. Describe its applications with suitable examples. Discuss the advantages, risks and challenges associated with agentic AI systems.
GS-III
2025•Mains•GS-III•Q.5
The fusion energy programme in India has steadily evolved over the past few decades. Mention India's contributions to the international fusion energy project - International Thermonuclear Experimental Reactor (ITER). What will be the implications of the success of this project for the future of global energy?
GS-III
2024•Mains•GS-III•Q.15
The world is facing an acute shortage of clean and safe freshwater. What are the alternative technologies which can solve this crisis? Briefly discuss any three such technologies citing their key merits and demerits.
GS-III
2023•Mains•GS-III•Q.2
What is the status of digitalization in the Indian economy? Examine the problems faced in this regard and suggest improvements.
Economy
2023•Mains•GS-III•Q.5
Introduce the concept of Artificial Intelligence (AI). How does AI help clinical diagnosis? Do you perceive any threat to privacy of the individual in the use of AI in healthcare?
GS-III
2023•Mains•GS-III•Q.6
Discuss several ways in which microorganisms can help in meeting the current fuel shortage.
GS-III
2023•Mains•GS-III•Q.15
The adoption of electric vehicles is rapidly growing worldwide. How do electric vehicles contribute to reducing carbon emissions and what are the key benefits they offer compared to traditional combustion engine vehicles?
GS-III
Prelims - Paper 1 (GS)
11 shown2026•Prelims•Paper 1 (GS)•Q.44
Which of the following statements with regard to Black Boxes used in modern aircrafts is/are correct?
1
They carry a beacon emitting red light pulses to facilitate underwater detection.
2
They record both the cockpit voice and flight data.
3
Their memory units are made using either stainless steel or titanium.
Science and Technology
2026•Prelims•Paper 1 (GS)•Q.45
Which of the following statements with regard to Green Hydrogen is/are correct?
1
It is decarbonized hydrogen obtained from natural gas reforming combined with carbon capture and storage (CCS).
2
It is produced using electrolysis of water with electricity generated by renewable energy.
3
National Green Hydrogen Mission of India aims for abatement of nearly 50 MMT of annual greenhouse gas emissions by 2030.
Science and Technology
2026•Prelims•Paper 1 (GS)•Q.49
Which of the following statements with regard to the National Quantum Mission (NQM) is/are correct?
1
It aims at developing intermediate-scale quantum computers with 50 - 1000 physical qubits.
2
Its implementation includes setting up of four Thematic Hubs (T-Hubs) in academic and national R&D institutes across India.
Quantum Technology
2026•Prelims•Paper 1 (GS)•Q.83
Which one of the following pairs of semiconductor plants in India and their locations is not correctly matched?
Science and Technology
2026•Prelims•Paper 1 (GS)•Q.84
Which of the following statements with regard to India's indigenous new high resolution weather model, the 'Bharat Forecast System,' is/are correct?
1
Its objective is to generate forecasts at the Panchayats cluster level.
2
It was developed by IIT Delhi.
Science and Technology
2026•Prelims•Paper 1 (GS)•Q.86
Which of the following statements regarding the features of blockchain technology are correct?
1
Records stored in the database may be made visible to relevant stakeholders without risk of alteration.
2
Copies of the entire database are stored on multiple computers on a network, syncing within seconds.
3
Consortium blockchain is a blend of public and private blockchains allowing selective data access.
4
Mathematical algorithms make it impossible to change or delete any data once recorded and accepted.
Science and Technology
2026•Prelims•Paper 1 (GS)•Q.89
Which one of the following best describes the key objective of India's 'Open Network for Digital Commerce' (ONDC) initiative?
Science and Technology
2025•Prelims•Paper 1 (GS)•Q.68
Consider the following statements in respect of RTGS and NEFT :
I. In RTGS, the settlement time is instantaneous while in case of NEFT, it takes some time to settle payments.
II. In RTGS, the customer is charged for inward transactions while that is not the case for NEFT.
III. Operating hours for RTGS are restricted on certain days while this is not true for NEFT.
Which of the statements given above is/are correct?
Science & Technology
2023•Prelims•Paper 1 (GS)•Q.53
Consider the following statements :
1
Carbon fibres are used in the manufacture of components used in automobiles and aircrafts.
2
Carbon fibres once used cannot be recycled.
Science and Technology
2023•Prelims•Paper 1 (GS)•Q.57
Which one of the following countries has its own Satellite Navigation System?
Science and Technology
2023•Prelims•Paper 1 (GS)•Q.58
Consider the following statements :
1
Ballistic missiles are jet-propelled at subsonic speeds throughout their flights, while cruise missiles are rocket-powered only in the initial phase of flight.
2
Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile.
Science and Technology