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PATHFINDER-ENVIRONMENTAL CHEMISTRY-QUESTION BANK
- Mention two harmful effects of photochemical smog?
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- How does the ozone layer depletion and a preventive measure that can b...
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- What is feron? Mention one of its effect.
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- Give examples of a sink of CO and two sinks of CO2
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- Dissolved oxygen values of four water samples A, B, C and D are respec...
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- Biochemical oxygen demand value of four water samples P, Q, R and S ar...
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- Threshold limit value of three pollutant X,Y and Z are respectively 9 ...
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- DO value of a water sample is 6 ppm. Calculate the weight of dissolved...
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- 100 ml of a sample of water required 1.96 mg of potassium dichromate i...
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- COD value of a water sample is 40 ppm, Calculate the amount of acidifi...
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- Ozone is harmful in the environment segment X but is useful in the env...
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- Freons are boon to industry, but curse to environment,justify
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- Bleaching og paper with hydrogen peroxide is preferred now-a-day .Why?
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- TLV value of four pollutants A, B C and D are 2ppm, 9 ppm, 20 ppm and ...
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- COD of a water sample is 8 ppm, Calculate the weight of acidified K2Cr...
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- K2Cr2O7 in presence of the H2SO4 for the oxidation of dissolved organ...
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- A sample of pond water contains 40mg of organic matter requires 32 mg ...
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- There is a possibility of melting of polar ice caps and increase in th...
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- When rain is accompanied by a thunderstorm, the collected rain water w...
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- Depletion of ozone layer is due to
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