Environment & Ecology PYQs

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1. Prelims 1999Q77Indian Environmental Laws & Bodies

   Which one of the following legislations does not deal with the protection of environment?

   aThe Water (Cess) Act, 1977bThe Forest (Conservation) Act, 1980cThe Public Liability Insurance Act, 1991dThe Port Laws Amendment Act, 1997
2. Prelims 1999Q107Sustainable Agriculture & Development

   Neem tree has acquired industrial importance as a source of

   abiopesticide and anti-fertility compoundbanti-fertility compound, biofertilizer and anti-cancer drugcbiofertilizer, biopesticide and anti-fertility compounddanti-cancer drug, biopesticide and biofertilizer
3. Prelims 1999Q121Sustainable Agriculture & Development

   Which one of the following agricultural practices is eco-friendly?

   aOrganic farmingbShifting cultivationcCultivation of high yielding varietiesdGrowing plants in glass-houses
4. Prelims 1998Q22Ecology & EcosystemsAnswer disputed

   Indonesian forest fire in 1997 was caused by

   agreenhouse effectbdepletion of the ozone layercEl Niño effectsdNone of the above
5. Prelims 1998Q42Sustainable Agriculture & Development

   According to Meadows (1972), if the present trends in world population, industrialisation, pollution, food production and resource depletion continue unchanged, the “Limits to Growth” on our planet will be reached in the next

   a50 yearsb100 yearsc150 yearsd200 years
6. Prelims 1998Q54Ecology & Ecosystems

   Estuaries possess distinct blooms of excessive growth of a pigmented dinoflagellate. These blooms are called

   ared tidesbsea tidescblack tidesdsea flowers
7. Prelims 1998Q92Indian Environmental Laws & Bodies

   ‘Eco mark’ is given to the Indian products that are

   apure and unadulteratedbrich in proteinscenvironment friendlydeconomically viable
8. Prelims 1998Q101Climate Change

   World Environment Conference to discuss global warming was held in 1997 in

   aStockholmbRio de JaneirocParisdKyoto
9. Prelims 1998Q102Environmental Pollution

   The water pollution in river is measured by the dissolved amount of

   aChlorinebOzonecNitrogendOxygen
10. Prelims 1998Q120Biodiversity & Species

    A tree species in Mauritius failed to reproduce because of the extinction of a fruit-eating bird.

    Which one of the following was that bird?

    aDovebDodocCondordSkua
11. Prelims 1997Q120Ecology & Ecosystems

    Which one of the following organisms is likely to show the highest concentration of DDT once it has been introduced into the ecosystem?

    aGrasshopperbToadcSnakedCattle
12. Prelims 1996Q39Biodiversity & SpeciesAnswer disputed

    Which one of the following regions of India is now regarded as an 'ecological hot spot'?

    aWestern HimalayasbEastern HimalayascWestern GhatsdEastern Ghats
13. Prelims 1996Q49Ecology & Ecosystems

    Assertion (A): Mangroves are very specialised forest ecosystems of tropical and subtropical regions bordering certain sea coasts.

    Reason (R): They stabilise the shoreline and act as bulwark against encroachments by sea.

    In the context of the above two statements, which one of the following is correct?

    aBoth A and R are true and R is the correct explanation of AbBoth A and R are true but R is not a correct explanation of AcA is true but R is falsedA is false but R is true
14. Prelims 1996Q63Indian Environmental Laws & Bodies

    Consider the following programmes:

    I.Afforestation and development of wastelands.

    II.Reforestation and replantation in existing forests.

    III.Encouraging the wood substitutes and supplying other types of fuel.

    IV.Promotion of wide use of insecticides and pesticides to restrict the loss of forest area from degradation caused by pests and insects.

    The National Forest Policy of 1988 includes

    aI, II, III and IVbII and IVcI, III and IVdI, II and III
15. Prelims 1996Q106Environmental Pollution

    Physico-chemical characteristics of water in water sources undergo changes due to

    aaquatic macrophytesbaquatic fungiceffluentsdevapotranspiration
16. Prelims 1996Q107Biodiversity & Species

    Ecologists have so far found and certified a large number of species in the plant and animal kingdoms. In terms of members, the largest group identified so far is among the

    aFungibPlantscInsectsdBacteria
17. Prelims 1996Q123Renewable Energy

    Consider the following statements: At the present level of technology available in India, solar energy can be conveniently used to

    I.Supply hot water to residential buildings.

    II.Supply water for minor irrigation projects.

    III.Provide street lighting.

    IV.Electrify a cluster of villages and small towns.

    Of these statements

    aI, II, III and IV are correctbI and IV are correctcI and III are correctdI, II and III are correct
18. Prelims 1995Q32Ecology & Ecosystems

    “Monoculture of commercially viable trees is destroying the unique natural profile of ……… Thoughtless exploitation of timber, deforesting vast tracts for palm cultivation, destruction of mangroves, illegal logging by tribals and poaching only compound the problem. Fresh water pockets are fast drying up due to deforestation and destruction of mangroves.” The place referred to in this quotation is

    aSundarbansbKerala CoastcOrissa CoastdAndaman and Nicobar Islands
19. Prelims 1995Q69Protected Areas & Conservation

    Which one of the following does not belong to biosphere reserves set up so far?

    aGreat NicobarbSunderbanscNanda DevidGulf of Kachchh
20. Prelims 1995Q117Renewable Energy

    Which one of the following fuels causes minimum environmental pollution?

    aDieselbCoalcHydrogendKerosene