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UPSC Prelims Science and Technology PYQs (2011–2026): Topic-wise with Answers – Page 3
196 UPSC Prelims questions on Science and Technology from 2011–2026, grouped by topic with the newest year first. The most-asked topics are Information and Communication Technology (36), Biotechnology (30), Biology (25). Difficulty: 19% easy, 50% medium and 31% hard.
Miscellaneous Science and Technology 13 questions
- Carbon FibresConsider the following statements:
- Drone ApplicationsConsider the following activities:
- Solar Water PumpsWith reference to solar water pumps, consider the following statements:
- Belle II Blockchain CRISPR ContextsConsider the following pairs: Terms sometimes seen in news Context/Topic
- Solar Power IndiaWith reference to solar power production in India, consider the following statements:
- Additive Manufacturing Applications3D printing' has applications in which of the following?
- Man Who Knew InfinityA recent movie titled The Man Who Knew Infinity is based on the biography of
- Packaged Food Label RequirementsWith reference to pre-packaged items in India, it is mandatory to the manufacturer to put which of the following information on the main label, as per the Food Safety…
- National Innovation FoundationWhich of the following statements is/are correct regarding National Innovation Foundation-India (NIF)?
- Solar Photovoltaics Solar ThermalWith reference to technology for solar power production, consider the following statements:
- Rare Earth MetalsRecently, there has been a concern over the short supply of a group of elements called ‘rare earth metals’. Why?
- Microbial Fuel CellsMicrobial fuel cells are considered a source of sustainable energy. Why?
- CFL vs LEDWhat is the difference between a CFL and an LED lamp?
Physics 17 questions
- Nobel Physics 2025 John ClarkeX', born in the UK, was conferred the Nobel Prize in 2025. He was a professor in an American university when this prize was announced. Identify 'X':
- Giant Stars LifespanConsider the following statements:
- Pressure Cooker TemperatureIn a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?
- Sodium vs LED LampsWith reference to street-lighting, how do sodium lamps differ from LED lamps?
- Black Hole Merger Gravitational WavesRecently, scientists observed the merger of giant 'blackholes' billions of light-years away from the Earth. What is the significance of this observation?
- General Relativity PredictionsConsider the following statements:
- Event Horizon String TheoryThe terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of
- Icecube Neutrino DetectorIn the context of modern scientific research, consider the following statements about 'IceCube', a particle detector located at South Pole, which was recently in the…
- Ball Bearings FrictionBall bearings are used in bicycles, cars, etc., because:
- Optical Illusions Sun MoonConsider the following statements:
- Rainbow FormationRainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this?
- Fundamental Forces GravityThe known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which…
- Higgs BosonThe efforts to detect the existence of Higgs boson particle have become frequent news in recent years. What is/are the importance/importances of discovering this…
- Expanding Universe EvidenceWhich of the following is/are cited by the scientists as evidence/evidences for the continued expansion of universe?
- Capillarity ApplicationsConsider the following statements:
- Satellite Orbital MotionAn artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth
- Frozen Lake Bottom WaterThe surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?
Defence Technology 14 questions
- BIS Bomb Disposal StandardThe Bureau of Indian Standards (BIS) recently introduced a national standard to test and assess bomb disposal system. Which of the following statements with regard to…
- Stealth TechnologyWhich of the following statements with regard to stealth technology is/are correct?
- Drone SwarmsWhich of the following statements with regard to drone swarms is/are correct?
- Mission Sudarshan ChakraConsider the following statements about Mission Sudarshan Chakra of India:
- Defence Hardware Made in IndiaWhich of the following items of defence hardware is/are manufactured in India?
- Uav Types Hovering Vertical LandingWith reference to Unmanned Aerial Vehicles (UAVs), consider the following statements:
- CL 20 HMX ExplosivesWhat is the common characteristic of the chemical substances generally known as CL-20, HMX and LLM-105, which are sometimes talked about in media?
- Dornier IL 76 C 17 AircraftWith reference to India's defence, consider the following pairs:
- Fifth Generation Fighter AircraftConsider the following aircraft:
- Ballistic vs Cruise MissilesConsider the following statements:
- Fractional Orbital Bombardment SystemWhich one of the following statements best reflects the idea behind the "Fractional Orbital Bombardment System" often talked about in media?
- THAAD Missile DefenceWhat is 'Terminal High Altitude Area Defence (THAAD)', sometimes seen in the news?
- INS Astradharini Torpedo Recovery VesselWhich one of the following is the best description of ‘INS Astradharani’, that was in the news recently?
- Agni IV MissileWith reference to Agni-IV Missile, which of the following statements is/are correct?
Health 14 questions
- Wolbachia MethodWolbachia method' is sometimes talked about with reference to which one of the following?
- Anaemia Mukt BharatConsider the following statements in the context of interventions being undertaken under Anaemia Mukt Bharat Strategy:
- Ayushman Bharat Digital MissionWith reference to Ayushman Bharat Digital Mission, consider the following statements:
- Probiotics Live MicroorganismsConsider the following statements in respect of probiotics:
- COVID 19 Vaccine PlatformsIn the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements:
- Pneumococcal Conjugate VaccineWhat is the importance of using Pneumococcal Conjugate Vaccines in India?
- Multi Drug Resistance CausesWhich of the following are the reasons for the occurrence of multi-drug resistance in microbial pathogens in India?
- Harmful Chemicals in ProductsConsider the following pairs:
- Millets Nutritional Security InitiativeWith reference to ‘Initiative for Nutritional Security through Intensive Millets Promotion’, which of the following statements is/are correct?
- Vitamin Deficiency DiseasesConsider the following pairs:
- Disease Eradication IndiaConsider the following diseases:
- Lead Poisoning SourcesLead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what are still the sources of lead poisoning?
- Trans Fat Free ClaimsA company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers?
- Aspartame Low Calorie SweetenerAspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie…