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Green Hydrogen — UPSC Prelims PYQ 2026Jeevan Bisht2026 / Environment / Renewable Energy / UPSC Prelims PYQs
Pumped-storage hydropower context — UPSC Prelims PYQ 2024Jeevan Bisht2024 / Environment / Renewable Energy / UPSC Prelims PYQs
Exhaust from hydrogen fuel cell vehicles — UPSC Prelims PYQ 2024Jeevan Bisht2024 / Environment / Renewable Energy / UPSC Prelims PYQs
Feedstocks for Sustainable Aviation Fuel — UPSC Prelims PYQ 2024Jeevan Bisht2024 / Environment / Renewable Energy / UPSC Prelims PYQs
Green hydrogen uses UPSC Prelims PYQ 2023Jeevan Bisht2023 / Environment / Renewable Energy / UPSC Prelims PYQs
Green hydrogen role in decarbonizing heavy industries — UPSC Prelims PYQ 2023Jeevan Bisht2023 / Environment / Renewable Energy / UPSC Prelims PYQs
Solar Energy Projects in India — UPSC Prelims PYQ 2022Jeevan Bisht2022 / Environment / Renewable Energy / UPSC Prelims PYQs
Solar water pumps — UPSC Prelims PYQ 2020Jeevan Bisht2020 / Environment / Renewable Energy / UPSC Prelims PYQs
Allowed raw materials for biofuels under India’s policy — UPSC Prelims PYQ 2020Jeevan Bisht2020 / Environment / Renewable Energy / UPSC Prelims PYQs
Hydrogen-enriched CNG (H-CNG) — UPSC Prelims PYQ 2019Jeevan Bisht2019 / Environment / Renewable Energy / UPSC Prelims PYQs
Algae-based biofuels limitations for developing countries — UPSC Prelims PYQ 2017Jeevan Bisht2017 / Environment / Renewable Energy / UPSC Prelims PYQs
Technologies for solar power: Photovoltaics vs Solar Thermal UPSC Prelims PYQ 2014Jeevan Bisht2014 / Environment / Renewable Energy / UPSC Prelims PYQs
Biomass Gasification UPSC Prelims PYQ 2012PMF IAS2012 / Environment / Renewable Energy / UPSC Prelims PYQs
Importance of bio-asphalt in roads — UPSC Prelims PYQ 2011PMF IAS2011 / Environment / Renewable Energy / UPSC Prelims PYQs
Energy crops for ethanol — UPSC Prelims PYQ 2010PMF IAS2010 / Environment / Renewable Energy / UPSC Prelims PYQs
Ethanol as a bio-fuel — UPSC Prelims PYQ 2009PMF IAS2009 / Environment / Renewable Energy / UPSC Prelims PYQs
