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Earn 100

Which of the following is a biodegradable pesticide?
(a)
DDT
(b)Aldrin
(c)Dieldrin
(d)Ethylene bromide

50% studentsanswered this correctly
Important Questions on Environmental Chemistry
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How many of the following pollutants are considered as non-viable particulate pollutants?
Smoke, dust, fungi, mists, moulds, algae, smog, bacteria, fumes

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The following table summarises the differences between biodegradable and non-biodegradable pollutants. Pick out the wrong differences and select the correct answer.
Biodegradable pollutants | Non-Biodegradable pollutants | |
---|---|---|
(i) | These are the pollutants which can be easily degraded by microorganisms | These are pollutants which cannot be degraded into harmless materials |
(ii) | These can be used to produce energy (through biogas) compost, manure, etc. | These are difficult to manage as a natural method of degradation is absent |
(iii) | These usually do not enter biogeochemical cycles | These become a part of rapid turnover in biogeochemical cycles |
(iv) | Examples: DDT, BHC, plastics, polyethylene, glass, etc. | Examples: Sewage, garbage, animal waste, etc. |

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A petroleum fraction having a boiling range and that contains carbon atoms per molecule is called

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Which phenomenon aids in making life on the globe more harmful?

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Statement 2: Catalytic converters greatly reduce pollution caused by automobiles.

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