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UPSC PYQs: Environment & Ecology

Review complete published questions grouped by topic: Environment & Ecology.

17 published questions

Other qualifying topic groups

Questions

Consider the following: I. Cigarette butts II. Eyeglass lenses III. Car tyres. How many of them contain plastic?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following substances: I. Ethanol II. Nitroglycerine III. Urea. Coal gasification technology can be used in the production of how many of them?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: Statement I: Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries. Statement II: Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals. Statement III: Activated carbon can be easily synthesized from environmental wastes with high carbon content. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: Statement I: Studies indicate that carbon dioxide emissions from cement industry account for more than 5% of global carbon emissions. Statement II: Silica-bearing clay is mixed with limestone while manufacturing cement. Statement III: Limestone is converted into lime during clinker production for cement manufacturing. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: Statement I: At the 28th United Nations Climate Change Conference(COP28), India refrained from signing the'Declaration on Climate and Health'. Statement II: The COP 28 Declaration on Climate and Health is a binding declaration; and if signed, it becomes mandatory to decarbonize health sector. Statement III: If India's health sector is decarbonized, the resilience of its health-care system may be compromised. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: Statement I: Scientific studies suggest that a shift is taking place in the Earth's rotation and axis. Statement II: Solar flares and associated coronal mass ejections bombarded the Earth's outermost atmosphere with tremendous amount of energy. Statement III: As the Earth's polar ice melts, the water tends to move towards the equator. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: Statement I: Article 6 of the Paris Agreement on climate change is frequently discussed in global discussions on sustainable development and climate change. Statement II: Article 6 of the Paris Agreement on climate change sets out the principles of carbon markets. Statement III: Article 6 of the Paris Agreement on climate change intends to promote inter-country non-market strategies to reach their climate targets. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Which one of the following launched the 'Nature Solutions Finance Hub for Asia and the Pacific'?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
With reference to'Direct Air Capture', an emerging technology, which of the following statements is/are correct? I. It can be used as a way of carbon sequestration. II. It can be a valuable approach for plastic production and in food processing. III. In aviation, it can be a source of carbon for combining with hydrogen to create synthetic low-carbon fuel.2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Regarding Peacock tarantula(Gooty tarantula), consider the following statements: I. It is an omnivorous crustacean. II. Its natural habitat in India is only limited to some forest areas. III. In its natural habitat, it is an arboreal species. Which of the statements given above is/are correct?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: I. Carbon dioxide(CO2) emissions in India are less than 0.5 t CO2/ capita. II. In terms of CO2 emissions from fuel combustion, India ranks second in Asia-Pacific region. III. Electricity and heat producers are the largest source of CO2 emissions in India. Which of the statements given above is/are correct?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
With reference to the planet Earth, consider the following statements: I. Rain forests produce more oxygen than that produced by oceans. II. Marine phytoplankton and photo-synthetic bacteria produce about 50% of world's oxygen. III. Well-oxygenated surface water contains several folds higher oxygen than that in atmospheric air. Which of the statements given above is/are correct?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: Statement I: Circular economy reduces the emissions of greenhouse gases. Statement II: Circular economy reduces the use of raw materials as inputs. Statement III: Circular economy reduces wastage in the production process. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Artificial way of causing rainfall to reduce air pollution makes use of2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Which organization has enacted the Nature Restoration Law(NRL) to tackle climate change and biodiversity loss?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
Consider the following statements: Statement I: Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former produces more ethanol than the latter. Statement II: Unlike in the United States of America where corn is the principal feedstock for ethanol production, sugarcane is the principal feedstock for ethanol production in Brazil. Which one of the following is correct in respect of the above statements?2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology
The World Bank warned that India could become one of the first places where wet-bulb temperatures routinely exceed 35°C. Which of the following statements best reflect(s) the implication of the above-said report? I. Peninsular India will most likely suffer from flooding, tropical cyclones and droughts. II. The survival of animals including humans will be affected as shedding of their body heat through perspiration becomes difficult.2025 · Prelims GS1 · Environment & Ecology · Environment & Ecology