EXAMIANS
Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes
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Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the
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Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm.
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Which of the following is a green house gas other than CO₂ ?
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Polyvinyl chloride containers are not suitable for storing
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Tolerable limit of nitrogen oxides in air is __________ ppm.
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The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels.
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Which of the following is an adsorbant for removal of nitrogen oxides from gas/air?
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Septic tanks are used for the __________ of the deposited solids.
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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 foundaries causes
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