EXAMIANS
__________ is the process of killing organism in water.
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Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is
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TLV of mercury in potable (drinking) water is about __________ ppm.
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Most of the bacteria in sewage are
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Siderosis is a disease caused by the inhalation of __________ dust.
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Dust collection efficiency of a cyclone separator depends upon its
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Removal of __________ is accomplished by aeration of water.
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Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in
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Removal of __________ results from the disinfection of water.
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For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.
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