EXAMIANS
Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.
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Which is the most widely used coagulant for the treatment of turbid water?
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Which is the most efficient dust removal equipment for removal of sub-micronic dust particles from blast furnace gas?
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Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas?
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Scale formation in boiler is controlled by
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The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the
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TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm.
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The Killer gas which caused Bhopal gas tragedy in 1984 was
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Pick out the one which is not a chemical coagulant.
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Which of the following pollutants, if present in atmosphere is detectable by its odour?
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