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If BOD of a river is high, it means that...

If BOD of a river is high, it means that the river is

A

not polluted

B

very much polluted with inorganic chemicals

C

very much polluted with organic chemicals which are decomposed by micro-organisms

D

polluted with pesticides

Text Solution

Verified by Experts

The correct Answer is:
C
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BRILLIANT PUBLICATION-ENVIRONMENTAL CHEMISTRY-QUESTIONS LEVEL-II
  1. In which one of the following the biochemical oxygen demand (BOD) of s...

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  2. Which one is not a correct statement? To minimise pollution:

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  3. If BOD of a river is high, it means that the river is

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  4. Photo-chemical oxidants such as PAN or PBN are formed:

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  5. Lung diseases are four times more in urban areas than rural areas. Thi...

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  6. Which one of is not correct? Green house effect

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  7. SO2 and NO2 causes pollution by increasing

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  8. Pollutant is a chemical substance or factor which disturbs:

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  9. Particulates are added to the atmosphere by:

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  10. The following process does not occur in the trophosphere: photosynth...

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  11. DDT and BHC are……………

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  12. Carbonaceous particles having size less than 10^(-6) m are called: g...

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  13. Which of the following statements about the depletion of ozone layer i...

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  14. Which of the following reactions does not contribute to air pollution ...

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  15. Select the incorrect statement. : Water is considered pure if it ha...

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  16. Pick up the correct statement.

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  17. How are flue gases from industries freed from oxides of nitrogen and s...

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  18. Which statement among the following is correct

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  19. Which of the following is/are correct statements for Bhopal gas traged...

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  20. Which of the following does not contribute towards the formation of ph...

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