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What is TLV?...

What is TLV?

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Threshold limit value (TLV) is the permissible limit of concentration of any environment pollutant beyond which it may cause adverse effect on living organism. TLV value of CO, `CO_2` and phosgene are 50 ppm, 5000 ppm and 0.1 ppm.
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PATHFINDER-ENVIRONMENTAL CHEMISTRY-QUESTION BANK
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  2. What is C.O.D. ? What is siltation?

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  3. What is TLV?

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  4. What is 'Pneumoconiosis?

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  5. Write down the main characteristics of drinking water.

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  6. Mention two harmful effects of photochemical smog?

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  7. How does the ozone layer depletion and a preventive measure that can b...

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  8. What is feron? Mention one of its effect.

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  9. Give examples of a sink of CO and two sinks of CO2

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  10. Dissolved oxygen values of four water samples A, B, C and D are respec...

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  11. Biochemical oxygen demand value of four water samples P, Q, R and S ar...

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  12. Threshold limit value of three pollutant X,Y and Z are respectively 9 ...

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  13. DO value of a water sample is 6 ppm. Calculate the weight of dissolved...

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  14. 100 ml of a sample of water required 1.96 mg of potassium dichromate i...

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  15. COD value of a water sample is 40 ppm, Calculate the amount of acidifi...

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

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

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

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

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

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