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The amount of oxygen required to oxidise...

The amount of oxygen required to oxidise organic substance present in water is called

A

DO

B

COD

C

BOD

D

TLV

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The correct Answer is:
B
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The amount of oxygen required to oxidies organic substance present in water is called

The amount of oxygen used by the suitable microorganisms present in water during five days at 20^(@)C is called as BOD. For pure water BOD is about 1 ppm fairly pure water 3 ppm and doubtful purity 5 ppm the municipal sewage has BOD values 100-4000 ppm. BOD= Number of moles of O_2 required / Number of liters of water sample If water is polluted its BOD value is

The amount of oxygen used by the suitable microorganisms present in water during five days at 20^(@)C is called as BOD. For pure water BOD is about 1 ppm fairly pure water 3 ppm and doubtful purity 5 ppm the municipal sewage has BOD values 100-4000 ppm. BOD= Number of moles of O_2 required / Number of liters of water sample The BOD value of municipal sewage is

The amount of oxygen used by the suitable microorganisms present in water during five days at 20^(@)C is called as BOD. For pure water BOD is about 1 ppm fairly pure water 3 ppm and doubtful purity 5 ppm the municipal sewage has BOD values 100-4000 ppm. BOD= Number of moles of O_2 required / Number of liters of water sample BOD is normally cxpressed for a time period of

The amount of oxygen used by micro organisms present in water for five days at 20^@C is called

The amount of oxygen used by micro organisms present in water for five days at 20^@C is called

Organic impurities present in waste water

AAKASH SERIES-ENVIRONMENTAL CHEMISTRY-LEVEL - I (EXERCISE -I) (Definition of terms , Introduction , Environmental segments - Air pollution , Water pollution)
  1. The amount of oxygen required for healthy growth of plants and animals...

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  2. A good quality of water will have

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  3. The amount of oxygen required to oxidise organic substance present in ...

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  4. Chemical oxygen demand is determined by using

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  5. COD is a measure of

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

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

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

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

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

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

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

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

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  14. The region which contains water vapour is

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

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  16. Which of the following is a primary pollutant

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  17. The greatest affinity for haemoglobin is shown by

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  18. The most abundant hydrocarbon pollutant is

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  19. Ozonc layer is present in the region

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

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