EXAMIANS
Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?
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Pick out the one which is not a chemical coagulant.
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The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the
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Fresh sewage is __________ in nature.
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Growth of __________ is promoted by the presence of manganese in water.
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The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent.
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The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water.
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Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
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TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm.
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Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million).
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