Acid rain is caused by increase in the atmospheric concentration of

(a) SO2 and NO2

(b) SO3 and CO

(c) CO2 and CO

(d) O3 and dust

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Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of

(a) food
(b) light
(c) essential minerals
(d) water

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Which of the following is not one of prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric zone?

(a) Increased skin cancer
(b) Reduced immune system
(c) Damage to eyes
(d) Increased liver cancer

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A location with luxuriant growth of lichens on the trees indicates that the:-

(a) trees are very healthy
(b) trees are heavily infested
(c) location is highly polluted
(d) location is not polluted

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The zone of atmosphere in which the ozone layer is present is called

(a) ionosphere
(b) mesosphere
(c) stratosphere
(b) troposphere

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A scrubber in the exhaust of a chemical industrial plant removes
(a) Gases like sulphur dioxide
(b) Particulate matter of the size 5 micrometer or above
(c) Gases like ozone and methane
(d) Particulate matter of the size 2.5 micrometer or less

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Kyoto Protocol was endorsed (supported) at

(a) CoP-3

(b) CoP-5

(c) CoP-6

(d) CoP-4

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Global warming can be controlled by 
(a) Reducing deforestation, cutting down use of fossil fuel
(b) Reducing reforestation, increasing the use of fossil fuel
(c) Increasing deforestation, slowing down the growth of human population
(d) Increasing deforestation, reducing efficiency of energy usage

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The Air Prevention and Control of Pollution Act came into force in ?

(a) 1975
(b) 1981
(c) 1985
(d) 1990

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In an area where DDT had been used extensively, the population of birds declined significantly because

(a) birds stopped laying eggs
(b) earthworms in the area got eradicated
(c) cobras were feeding exclusively on birds
(d) many of the birds eggs laid, early hatched

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