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Which of the following does not indicate...

Which of the following does not indicate high level of pollutants or the toxic substances I) High DO value II) High COD value Ill) High BOO value IV) High TLV The correct combination is

A

All are correct

B

I and IV only

C

II and II only

D

III and IV only

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-ENVIRONMENTAL CHEMISTRY-LEVEL - I (EXERCISE -I) (Definition of terms , Introduction , Environmental segments - Air pollution , Water pollution)
  1. Which of the following is a measure of bacteria present in water

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  2. {:("List-I","List-II"),((A)"Pollutant but not contaminant ",(I)"Methyl...

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  3. Which of the following does not indicate high level of pollutants or t...

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  4. The study of toxicity of organo metallic compounds is termed as

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  5. (A): COD of water is detennined by oxidising the organic matter with a...

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  6. The TLV values of four pollutants A, B, C and Dare 9ppm, 10ppm, 100ppm...

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  7. The region which is greatly affected by air pollution is

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  8. The region which contains water vapour is

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  9. Solid component of the carth consisting of soil, rocks and mountains i...

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  10. Which of the following is a primary pollutant

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  11. The greatest affinity for haemoglobin is shown by

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  12. The most abundant hydrocarbon pollutant is

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  13. Ozonc layer is present in the region

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  14. In which or the following region ionisation of gases takes place

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  15. Heat balance on earth surface is maintained by circulation of air in

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  16. The extent of conversion of oxyhaemoglobin lo carboxy heaemoglobin dep...

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  17. The level of CO gas in air that causes immediate death is

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  18. The source of CO(2) in the atmosphere is

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  19. Which is incorrect about 'green house effect'

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  20. Global warming can be prevented by

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