Environment & Ecology PYQs

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1. Prelims 2020Q76Environmental Pollution

   Steel slag can be the material for which of the following ?

   1.Construction of base road

   2.Improvement of agricultural soil

   3.Production of cement

   Select the correct answer using the code given below :

   a1 and 2 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
2. Prelims 2020Q77Protected Areas & Conservation

   Which of the following are the most likely places to find the musk deer in its natural habitat ?

   1.Askot Wildlife Sanctuary

   2.Gangotri National Park

   3.Kishanpur Wildlife Sanctuary

   4.Manas National Park

   Select the correct answer using the code given below :

   a1 and 2 onlyb2 and 3 onlyc3 and 4 onlyd1 and 4 only
3. Prelims 2020Q78Sustainable Agriculture & Development

   In rural road construction, the use of which of the following is preferred for ensuring environmental sustainability or to reduce carbon footprint ?

   1.Copper slag

   2.Cold mix asphalt technology

   3.Geotextiles

   4.Hot mix asphalt technology

   5.Portland cement

   Select the correct answer using the code given below :

   a1, 2 and 3 onlyb2, 3 and 4 onlyc4 and 5 onlyd1 and 5 only
4. Prelims 2020Q79Environmental Pollution

   Consider the following statements :

   1.Coal ash contains arsenic, lead and mercury.

   2.Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment.

   3.High ash content is observed in Indian coal.

   Which of the statements given above is/are correct ?

   a1 onlyb2 and 3 onlyc3 onlyd1, 2 and 3
5. Prelims 2020Q80Sustainable Agriculture & Development

   What is the use of biochar in farming ?

   1.Biochar can be used as a part of the growing medium in vertical farming.

   2.When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.

   3.When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time.

   Which of the statements given above is/are correct ?

   a1 and 2 onlyb2 onlyc1 and 3 onlyd1, 2 and 3
6. Prelims 2020Q81Indian Environmental Laws & Bodies

   If a particular plant species is placed under Schedule VI of The Wildlife Protection Act, 1972, what is the implication ?

   aA licence is required to cultivate that plant.bSuch a plant cannot be cultivated under any circumstances.cIt is a Genetically Modified crop plant.dSuch a plant is invasive and harmful to the ecosystem.
7. Prelims 2020Q83Sustainable Agriculture & Development

   What is/are the advantage/advantages of zero tillage in agriculture ?

   1.Sowing of wheat is possible without burning the residue of previous crop.

   2.Without the need for nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible.

   3.Carbon sequestration in the soil is possible.

   Select the correct answer using the code given below :

   a1 and 2 onlyb2 and 3 onlyc3 onlyd1, 2 and 3
8. Prelims 2020Q84Renewable Energy

   According to India's National Policy on Biofuels, which of the following can be used as raw materials for the production of biofuels ?

   1.Cassava

   2.Damaged wheat grains

   3.Groundnut seeds

   4.Horse gram

   5.Rotten potatoes

   6.Sugar beet

   Select the correct answer using the code given below :

   a1, 2, 5 and 6 onlyb1, 3, 4 and 6 onlyc2, 3, 4 and 5 onlyd1, 2, 3, 4, 5 and 6
9. Prelims 2020Q85Climate Change

   Which one of the following statements best describes the term 'Social Cost of Carbon' ?

   It is a measure, in monetary value, of the

   along-term damage done by a tonne of CO₂ emissions in a given year.brequirement of fossil fuels for a country to provide goods and services to its citizens, based on the burning of those fuels.cefforts put in by a climate refugee to adapt to live in a new place.dcontribution of an individual person to the carbon footprint on the planet Earth.
10. Prelims 2020Q88Renewable Energy

    With reference to solar water pumps, consider the following statements :

    1.Solar power can be used for running surface pumps and not for submersible pumps.

    2.Solar power can be used for running centrifugal pumps and not the ones with piston.

    Which of the statements given above is/are correct ?

    a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
11. Prelims 2020Q90Sustainable Agriculture & DevelopmentAnswer disputed

    In the context of India, which of the following is/are considered to be practice(s) of eco-friendly agriculture ?

    1.Crop diversification

    2.Legume intensification

    3.Tensiometer use

    4.Vertical farming

    Select the correct answer using the code given below :

    a1, 2 and 3 onlyb3 onlyc4 onlyd1, 2, 3 and 4
12. Prelims 2020Q95Protected Areas & Conservation

    With reference to India's Desert National Park, which of the following statements are correct ?

    1.It is spread over two districts.

    2.There is no human habitation inside the Park.

    3.It is one of the natural habitats of Great Indian Bustard.

    Select the correct answer using the code given below :

    a1 and 2 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3
13. Prelims 2020Q100Protected Areas & Conservation

    Among the following Tiger Reserves, which one has the largest area under “Critical Tiger Habitat” ?

    aCorbettbRanthamborecNagarjunsagar-SrisailamdSunderbans
14. Prelims 2019Q18Protected Areas & Conservation

    Which one of the following National Parks lies completely in the temperate alpine zone?

    aManas National ParkbNamdapha National ParkcNeora Valley National ParkdValley of Flowers National Park
15. Prelims 2019Q22Biodiversity & Species

    Consider the following statements :

    1.Asiatic lion is naturally found in India only.

    2.Double-humped camel is naturally found in India only.

    3.One-horned rhinoceros is naturally found in India only.

    Which of the statements given above is/are correct?

    a1 onlyb2 onlyc1 and 3 onlyd1, 2 and 3
16. Prelims 2019Q25Climate Change

    In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol into stratosphere?

    aCreating the artificial rains in some regionsbReducing the frequency and intensity of tropical cyclonescReducing the adverse effects of solar wind on the EarthdReducing the global warming
17. Prelims 2019Q26Environmental Pollution

    In the context of which one of the following are the terms 'pyrolysis and plasma gasification' mentioned?

    aExtraction of rare earth elementsbNatural gas extraction technologiescHydrogen fuel-based automobilesdWaste-to-energy technologies
18. Prelims 2019Q27Protected Areas & Conservation

    Which of the following are in Agasthyamala Biosphere Reserve?

    aNeyyar, Peppara and Shendurney Wildlife Sanctuaries; and Kalakad Mundanthurai Tiger ReservebMudumalai, Sathyamangalam and Wayanad Wildlife Sanctuaries; and Silent Valley National ParkcKaundinya, Gundla Brahmeswaram and Papikonda Wildlife Sanctuaries; and Mukurthi National ParkdKawal and Sri Venkateswara Wildlife Sanctuaries; and Nagarjunasagar-Srisailam Tiger Reserve
19. Prelims 2019Q28Biodiversity & Species

    Consider the following statements :

    1.Some species of turtles are herbivores.

    2.Some species of fish are herbivores.

    3.Some species of marine mammals are herbivores.

    4.Some species of snakes are viviparous.

    Which of the statements given above are correct?

    a1 and 3 onlyb2, 3 and 4 onlyc2 and 4 onlyd1, 2, 3 and 4
20. Prelims 2019Q29Biodiversity & SpeciesAnswer disputed

    Consider the following pairs :

    Wildlife : Naturally found in

    1.Blue-finned Mahseer : Cauvery River

    2.Irrawaddy Dolphin : Chambal River

    3.Rusty-spotted Cat : Eastern Ghats

    Which of the pairs given above are correctly matched?

    a1 and 2 onlyb2 and 3 onlyc1 and 3 onlyd1, 2 and 3