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COD is a measure of...

COD is a measure of

A

Organic substances in water

B

Oxides of S, P and N in air

C

Inorganic pollutants in water

D

Salinity of water

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The correct Answer is:
A
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AAKASH SERIES-ENVIRONMENTAL CHEMISTRY-LEVEL - I (EXERCISE -I) (Definition of terms , Introduction , Environmental segments - Air pollution , Water pollution)
  1. The amount of oxygen required to oxidise organic substance present in ...

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  2. Chemical oxygen demand is determined by using

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  3. COD is a measure of

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

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

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

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

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

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

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

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

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  12. The region which contains water vapour is

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

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  14. Which of the following is a primary pollutant

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  15. The greatest affinity for haemoglobin is shown by

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  16. The most abundant hydrocarbon pollutant is

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  17. Ozonc layer is present in the region

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

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

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

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