EXAMIANS
Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in
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A standard test for determination of hardness in water is termed as __________ test.
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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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Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.
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Fine grit present in sewage is removed in the __________ during sewage treatment.
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Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes
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Aerosols present in atmospheric air may be
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Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.
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Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called
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The common pollutant generated in chlor-alkali industry and battery manufacture is
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