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Which of the following are true ? I....

Which of the following are true ?
I. Benzene hexachloride is a non- biodegradable pollutants .
II. Anthropogenic air pollutants are natural in origin .
III. Carbon monoxide is a primary air pollutant .
IV. Sulphur dioxide cause brown air effect during traffic congestion in cities.

A

I and III only

B

I and II only

C

II and III only

D

II and IV only

Text Solution

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The correct Answer is:
A
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ICSE-ENVIRONMENTAL ISSUES-COMPETITION CORNER (OBJECTIVE TYPE QUESTIONS)
  1. Which one of the following is a most efficient device to eliminate...

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  2. Which one of the following in not an air pollutant ?

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  3. Which of the following are true ? I. Benzene hexachloride is a non...

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  4. Match the following and choose the correct combination from the op...

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  5. Which of the following plants is used for the purification of wate...

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  6. In the treatment of waste water before discharge which treatment s...

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  7. Which of the following gases does not cause acid rain ?

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  8. Greenhouse effect with respect to global climate refers to

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  9. Common indicator organism of water pollution is

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  10. Bhopal gas tragedy of 1984 took place because methyl isocyanate reacte...

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  11. The intensity levels of whispering noise is

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  12. Which element is cause of itai-itai disease?

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  13. SO(2) pollution is indicated by

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  14. CO(2), CH(4), N(2)O and CFCs are called green house gases because they...

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  15. Decibel (dB) is a standard abbreviation used for the quantitative expr...

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  16. The two gases making highest ralative contribution to the greenhouse g...

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  17. What is the function of ozone in the upper atmosphere ?

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  18. Given pie-diagram represents the relative contribution of various GHGs...

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  19. Increase in concentration of the toxicant at successive trophic levels...

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  20. Eutrophicated lake has BOD

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