UPSC 2025 › Environment & Ecology
15 questions · 2025 · answers as per the UPSC key
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?
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Consider the following statements : I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth’s surface. II. Heat absorbed and trapped by the atmosphere maintains our planet’s average temperature. III. Atmosphere’s gases, like carbon dioxide, are particularly good at absorbing and trapping radiation.
Which of the statements given above are correct?
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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?
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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 COP28 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?
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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?
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Which one of the following launched the ‘Nature Solutions Finance Hub for Asia and the Pacific’?
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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?
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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 sources of CO2 emissions in India.
Which of the statements given above is/are correct?
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Consider the following pairs : Plant : Description I. Cassava : Woody shrub II. Ginger : Herb with pseudostem III. Malabar spinach : Herbaceous climber IV. Mint : Annual shrub V. Papaya : Woody shrub
How many of the above pairs are correctly matched?
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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 photosynthetic 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?
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Consider the following : I. Cigarette butts II. Eyeglass lenses III. Car tyres
How many of them contain plastic?
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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?
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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?
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Artificial way of causing rainfall to reduce air pollution makes use of
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Which organization has enacted the Nature Restoration Law (NRL) to tackle climate change and biodiversity loss?