EXAMIANS
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes
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In a sedimentation tank, the detention period for water ranges from __________ hours.
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Polluted water having low BOD are most economically treated in
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Scale formation in boiler is controlled by
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Presence of __________ hardness is responsible for the temporary hardness in water.
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Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)?
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Deaeration of high pressure boiler feed water is done to reduce
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Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for
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Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
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Presence of __________ in water stream are deleterious to aquatic life.
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