Maximum permissible residual chlorine in treated water should be __________ mg/liter.
READ MORE +Air Pollution MCQs
Global warming may result in
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Q. Green House gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?
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Photochemical smog is formed from automobile exhaust
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Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes
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Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of
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The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the
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Q. Ringelmann chart is used for the evaluation of __________ pollution. AirWaterNoiseRadioactive Answer: Air
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Which of the following is an adsorbent for removal of nitrogen oxides from gas/air?
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Which of the following is not a source of ozone emission in the atmosphere?
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In a sedimentation tank, the detention period for water ranges from __________ hours.
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Which of the following is not a practical method of low level radioactive waste disposal?
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