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Which of the following is a measure of b...

Which of the following is a measure of bacteria present in water

A

DO

B

COD

C

BOD

D

TLV

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The correct Answer is:
C
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AAKASH SERIES-ENVIRONMENTAL CHEMISTRY-LEVEL - I (EXERCISE -I) (Definition of terms , Introduction , Environmental segments - Air pollution , Water pollution)
  1. COD is a measure of

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  2. The amount of oxygen used by micro organisms present in water for five...

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  3. Which of the following is a measure of bacteria present in water

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

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

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

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

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

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

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  10. The region which contains water vapour is

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

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  12. Which of the following is a primary pollutant

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  13. The greatest affinity for haemoglobin is shown by

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  14. The most abundant hydrocarbon pollutant is

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  15. Ozonc layer is present in the region

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

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

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

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

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

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