EXAMIANS
Reingleman chart No. 2 corresponds to __________ percent black smoke.
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Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
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BOD of raw municipal sewage may be in the range of about __________ mg/litre.
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Ethanolamine is an absorbant used for the removal of __________ from air/gas.
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Radioactive substances present in the polluted water stream can be removed by
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Polluted water having low BOD are most economically treated in
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Soluble silica present in boiler feed water can be removed by
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Biological oxidation ponds remove organic matters present in the polluted water by
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Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming
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In water treatment plant, zeolite process is used to remove the __________ of water.
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