MCQs: Ringelmann chart No. 2 corresponds to _______________ percent black smoke?
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MCQs: Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?
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MCQs: ______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?
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MCQs: The weakest sound that can be heard by a person in a quiet environment is equivalent to ____________ decibel ?
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MCQs: Workers working in _______________ industry are most prone to white lung cancer?
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MCQs: Which of the following is a manmade source of air pollution ?
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MCQs: Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur ?
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MCQs: Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of________________?
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MCQs: The function of skimming tank in sewage treatment is to remove _____________ substances?
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MCQs: A standard test for determination of hardness in water is termed as ______________ test?
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MCQs: Removal of ______________ results from the disinfection of water?
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MCQs: Which of the following is not a natural source of air pollution ?
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MCQs: Which of the following is the most widely used disinfectant in water treatment ?
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MCQs: There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth’s surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about _____________ °C/km?
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MCQs: Threshold limit value (TLV) of CO in air is _____________ ppm?
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MCQs: Ethanolamine is an absorbent used for the removal of _____________ from air/gas?
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MCQs: Pick out the wrong statement ?
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MCQs: Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas ?
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MCQs: Presence of nitrates in water in excess of 50 ppm causes________________?
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MCQs: Black smoke coming out of the chimney of a furnace is an indication of the use of ______________ in the furnace?
Category: Chemical Engineering Mcqs, Published by: teswesm
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