EXAMIANS
Main pollutant present in automobile exhaust is
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The function of skimming tank in sewage treatment is to remove __________ substances.
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Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan
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Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyl and haemoglobin breakdown of some animals, beyond TLV (>50 ppm)
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In large thermal power stations very fine particulates present in flue gas are removed by
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Polyvinyl chloride containers are not suitable for storing
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Which of the following is not a secondary air pollutant?
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Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?
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The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the
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Polluted water having low BOD are most economically treated in
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