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Which one of the following statements is...

Which one of the following statements is not true

A

Concentration of DO below 6 ppm is good for the growth of fish.

B

Clean water would have a BOD value of less than 5 ppm.

C

Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant.

D

pH of drinking water should be between 5.5-9.5.

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The correct Answer is:
A
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ICSE-ENVIRONMENTAL CHEMISTRY -OBJECTIVE (MULTIPLE CHOCIE ) TYPE QUESTIONS
  1. The presence of SO(3) to an extent of 1 ppm in air is

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  2. The major source of CO pollution is

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  3. Los Angeles smog is

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

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  5. The depletion of ozone layer

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  6. Which of the following is not a greenhouse gas ?

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  7. Identify the incorrect statement from the following

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  8. What is DDT among the following :

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  9. Which one of the following statements is not true

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  10. Which of the following statements about photochemical smog is not corr...

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  11. Which of the following is not a common component of photochemical smog...

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  12. The gas leaked from a storage tank of the Union Carbide plant in Bhopa...

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  13. Which of the following is a sink for CO?

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  14. Which oxide of nitrogen is not a common pollutant introduced into the ...

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  15. Among the following, the one that is not a greenhouse gas is :

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  16. The primary pollutant that leads to photochemical smog is :

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  17. The atmosphere between the heights 10 to 50 kilometer above the Sea le...

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  18. Excessive release of CO(2) into the atmosphere results in :

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  19. Assertion : Ozone is destroyed by CFCs in the upper stratosphere. Re...

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  20. Which is wrong with respect to our responsibility as a human being to ...

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