Energy, physics & chemistry
Asked in 9 of the last 11 Prelims papers. A must-do.
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How it's askedEveryday science and energy technologies.
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all 25 questions
2026Which of the following statements with regard to Green Hydrogen is/are correct ?2025How many of the above are considered as alternative powertrain vehicles? (Full battery electric vehicles, Hydrogen…2025In the context of electric vehicle batteries, consider the following elements2025How many of them contain plastic? (Cigarette butts, Eyeglass lenses, Car tyres)2025Coal gasification technology can be used in the production of how many of them? (Ethanol, Nitroglycerine, Urea)2025Artificial way of causing rainfall to reduce air pollution makes use of2024How many of the above are considered "Distributed Energy Resources" ? (Battery storage, Biomass generators, Fuel…2024With reference to radioisotope thermoelectric generators (RTGs): “RTGs are miniature fission reactors.” and 2 more…2024Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen ?2024Recently, the term "pumped-storage hydropower" is actually and appropriately discussed in the context of which one of…Show all 25
2024Which of the above can be used as feedstock for producing Sustainable Aviation Fuel ? (Agricultural residues, Corn…2023“India, despite having uranium deposits, depends on coal for most of its electricity…” and 1 more statement2023With reference to green hydrogen: “It can be used directly as a fuel for internal combustion.” and 2 more statements2023Green hydrogen is expected to play a significant role in decarbonizing how many of the above industries? (Fertilizer…2021In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?2021Water can dissolve more substances than any other liquid because2021With reference to street-lighting, how do sodium lamps differ from LED lamps?2020In India, why are some nuclear reactors kept under "IAEA Safeguards" while others are not ?2020According to India's National Policy on Biofuels, which of the following can be used as raw materials for the…2020With reference to solar water pumps: “Solar power can be used for running surface pumps and not for submersible…2019In the context of proposals to the use of hydrogen-enriched CNG (H-CNG) as fuel for buses in public transport…2017It is possible to produce algae based biofuels, but what is/are the likely limitation(s) of developing countries in…2017Commonly used / consumed materials: Lipstick, Soft drinks, Chinese fast food2016India is an important member of the 'International Thermonuclear Experimental Reactor'. If this experiment succeeds…2016A recent movie titled The Man Who Knew Infinity is based on the biography ofAdvertiseReach UPSC aspirants with one line here. Sponsor Crack Prelims →