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

Concept Questions :-

Air Pollution
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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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Which one of the following is a wrong statement?

(a) Most of the forests have been lost in tropical areas

(b) Ozone in upper part of atmosphere is harmful to animals

(c) Greenhouse effect is a natural phenomenon

(d) Eutrophication is a natural phenomenon in freshwater bodies

 

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Measuring Biochemical Oxygen Demand (BOD) is a method used for
(a) estimating the amount of organic matter in sewage water
(b) working out the efficiency of oil driven automobile engines
(c) measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale
(d) working out the efficiency of RBCs about their capacity to carry oxygen

 

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Which one of the following pairs of gases are the major cause of Green house effect?
(a) CO2 and CO
(b) CFCs and SO2
(c) CO2 and N20
(d) CO2 and O3

Concept Questions :-

Green House Effect & Global Warming
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