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Freons are boon to industry, but curse t...

Freons are boon to industry, but curse to environment,justify

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PATHFINDER-ENVIRONMENTAL CHEMISTRY-QUESTION BANK
  1. COD value of a water sample is 40 ppm, Calculate the amount of acidifi...

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  2. Ozone is harmful in the environment segment X but is useful in the env...

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  3. Freons are boon to industry, but curse to environment,justify

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  4. Bleaching og paper with hydrogen peroxide is preferred now-a-day .Why?

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  5. TLV value of four pollutants A, B C and D are 2ppm, 9 ppm, 20 ppm and ...

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  6. COD of a water sample is 8 ppm, Calculate the weight of acidified K2Cr...

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  7. K2Cr2O7 in presence of the H2SO4 for the oxidation of dissolved organ...

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  8. A sample of pond water contains 40mg of organic matter requires 32 mg ...

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  9. There is a possibility of melting of polar ice caps and increase in th...

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  10. When rain is accompanied by a thunderstorm, the collected rain water w...

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  11. Depletion of ozone layer is due to

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  12. High concentration of hydrocarbon pollutant in atmospheric air causes

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  13. The smog is essentially caused by presence of

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  14. Lead in water can cause

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  15. Greenhouse efficiency factor is maximum for

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  16. One of the metals used as catalyst in automobiles catalytic convertor ...

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  17. Most important cause of soil pollution is

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  18. Phosphate pollution is mainly caused by

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  19. Excess nitrate in drinking water can cause

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  20. How many of the following are responsible for depletion of ozone layer

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