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The TLV values of four pollutants A, B, ...

The TLV values of four pollutants A, B, C and Dare 9ppm, 10ppm, 100ppm and 500 ppm respectively. The most toxic amount them is

A

A

B

B

C

C

D

D

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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 study of toxicity of organo metallic compounds is termed as

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

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

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

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  5. The region which contains water vapour is

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

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  7. Which of the following is a primary pollutant

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  8. The greatest affinity for haemoglobin is shown by

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  9. The most abundant hydrocarbon pollutant is

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  10. Ozonc layer is present in the region

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

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

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

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

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

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  16. Which is incorrect about 'green house effect'

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  17. Global warming can be prevented by

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  18. The set of gases causing green house effect is

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  19. Unimely and unusual rains are due to

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

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