UPSC CSE · Subject
UPSC Prelims Environment and Ecology PYQs (2011–2026): Topic-wise with Answers
283 UPSC Prelims questions on Environment and Ecology from 2011–2026, grouped by topic with the newest year first. The most-asked topics are Climate Change (43), Biodiversity (41), Pollution (40). Difficulty: 18% easy, 53% medium and 29% hard.
Environment and Ecology topics
- Climate Change43 questions
- Biodiversity41 questions
- Pollution40 questions
- Species38 questions
- Ecology and Ecosystem30 questions
- Environmental Laws, Conventions and Policies21 questions
- Miscellaneous Environment and Ecology21 questions
- Agriculture and Environment19 questions
- Protected Areas and Conservation16 questions
- Environmental Organisations14 questions
Climate Change 43 questions
- Khasi Hills REDD PlusWhich one of the following is the first Plan Vivo certified Reducing Emissions from Deforestation and Forest Degradation (REDD+) project in India?
- India Long Term Low Emission StrategyConsider the following statements with reference to India's response to climate change:
- Green Hydrogen Electrolysis CCSWhich of the following statements with regard to Green Hydrogen is/are correct?
- COP28 Health DeclarationConsider the following statements:
- Earth Rotation Shift ClimateConsider the following statements:
- Paris Agreement Article 6Consider the following statements:
- Direct Air CaptureWith reference to 'Direct Air Capture', an emerging technology, which of the following statements is/are correct?
- India CO2 EmissionsConsider the following statements:
- Wet Bulb Temperature IndiaThe World Bank warned that India could become one of the first places in the world where wet-bulb temperatures routinely exceed 35°C.
- Net Zero Industry ActConsider the following statements:
- Carbon MarketsConsider the following statements:
- Green Hydrogen IndustriesConsider the following heavy industries:
- Carbon Capture MethodsConsider the following activities:
- Climate Action Tracker"Climate Action Tracker, which monitors the emission reduction pledges of different countries is a:
- Climate GroupConsider the following statements:
- Blue CarbonWhat is blue carbon?
- Common Carbon MetricThe 'Common Carbon Metric', supported by UNEP, has been developed for
- CCAFS Climate Smart VillagesIn the context of India's preparation for Climate-Smart Agriculture, consider the following statements:
- Social Cost of CarbonWhich one of the following statements best describes the term 'Social Cost of Carbon'? It is a measure, in monetary value, of the
- Cirrus Cloud Thinning GeoengineeringIn the context of which of the following do some scientists suggest the used of cirrus cloud thinning technique and the injection of sulphate aerosol into stratosphere?
- Methane HydrateWhich of the following statements are correct about the deposits of 'methane hydrate'?
- Climate Smart Agriculture AllianceWith reference to the 'Global Alliance for Climate-Smart Agriculture (GACSA)', which of the following statements is/are correct?
- Carbon FertilizationWhich of the following statements best describes 'carbon fertilization'?
- Climate Neutral NowMomentum for Change: Climate Neutral Now' is an initiative launched by
- Global Climate Change AllianceWith reference to ‘Global Climate Change Alliance’, which of the following statements is/are correct?
- Climate Clean Air CoalitionConsider the following statements:
- Carbon Capture Storage OptionsIn the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be potential sites for carbon…
- Paris AgreementWith reference to the Agreement at the UNFCCC Meeting in Paris in 2015, which of the following statements is/are correct?
- Indcs Climate PlansThe term ‘Intended Nationally Determined Contributions’ is sometimes seen in the news in the context of
- UNCCD ImportanceWhat is/are the importance/importances of the ‘United Nations Convention to Combat Desertification’?
- Green India MissionWhich of the following best describes the aim of ‘Green India Mission’ of the Government of India?
- Forest Carbon REDD Plus BenefitsWhich of the following statements is/are correct?
- Greenhouse Gas ProtocolWhat is ‘Greenhouse Gas Protocol’?
- Green Climate FundWhich of the following statements regarding 'Green Climate Fund' is/are correct?
- Biocarbon Fund InitiativeBioCarbon Fund Initiative for Sustainable Forest Landscapes' is managed by the
- Forest Carbon Partnership FacilityWith reference to 'Forest Carbon Partnership Facility', which of the following statements is/are correct?
- Global Warming Two Degree LimitThe scientific view is that the increase in global temperature should not exceed 2°C above pre-industrial level. If the global temperature increases beyond 3°C above…
- Ocean AcidificationThe acidification of oceans is increasing. Why is this phenomenon a cause of concern?
- Carbon Dioxide Infrared AbsorptionThe increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere because it absorbs
- Coal Combustion EmissionsConsider the following:
- Antarctic Ozone HoleThe formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
- Carbon CreditsRegarding “carbon credits”, which one of the following statements is not correct?
- Carbon Dioxide Ocean SinkHuman activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere…
Biodiversity 17 questions
- Indri Elk Bonobo HabitatsConsider the following pairs:
- NATIVE Trees of IndiaConsider the following:
- Honeybee Waggle DanceWhich of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?
- Mushroom PropertiesConsider the following statements:
- Biorock Technology"Biorock technology" is talked about in which one of the following situations?
- Miyawaki MethodThe "Miyawaki method" is well known for the:
- Fungus Cultivating AntsCertain species of which one of the following organisms are well known as cultivators of fungi?
- Lichen Moss Without SoilIn the nature, which of the following is/are most likely to be found surviving on a surface without soil?
- Forest Cover States RankingConsider the following states:
- Desert Plant AdaptationsWhich of the following leaf modifications occur(s) in the desert areas to inhibit water loss?
- Sixth Mass ExtinctionThe term 'sixth mass extinction/sixth extinction' is often mentioned in the news in the context of the discussion of
- Coral Reefs DistributionConsider the following statements:
- Gharial Habitat ChambalIf you want to see gharials in their natural habitat, which one of the following is the best place to visit?
- M Stripes Tiger MonitoringThe term ‘M-STrIPES’ is sometimes seen in the news in the context of
- Schedule I Tortoise ProtectionIn India, if a species of tortoise is declared protected under Schedule I of the Wildlife (Protection) Act, 1972, what does it imply?
- Asiatic Lion Translocation KunoRecently there was a proposal to translocate some of the lions from their natural habitat in Gujarat to which one of the following sites?
- Great Indian HornbillIn which of the following regions of India are you most likely to come across the ‘Great Indian Hornbill’ in its natural habitat?