Chemical Engineering MCQs

6108 MCQs  (Page 521 of 611)

Attempt Chemical Engineering Quiz
Global warming may result in __________________?
A. Flood
B. Cyclone
C. Decrease in food productivity
D. All a., b. and c.
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Ringelmann chart No. 2 corresponds to _______________ percent black smoke?
A. 10
B. 20
C. 40
D. 80
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Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?
A. Chemical coagulation
B. Floatation & skimming
C. Centrifugation
D. Ultra filtration
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______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?
A. Calcium
B. Fluorine
C. Phosphorous
D. Sulphur
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The weakest sound that can be heard by a person in a quiet environment is equivalent to ____________ decibel ?
A. 1
B. 5
C. 10
D. 50
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Workers working in _______________ industry are most prone to white lung cancer?
A. Coal mining
B. Limestone mining
C. Textile
D. Asbestos
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Which of the following is a manmade source of air pollution ?
A. Automobile exhaust
B. Forest fire
C. Bacterial action in soil and swamp areas
D. All a., b. and c.
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Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur ?
A. Thermosphere
B. Troposphere
C. Stratosphere
D. None of these
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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________________?
A. Co2
B. So2
C. Hydrocarbons
D. Cfc (chloro fluoro carbon)
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The function of skimming tank in sewage treatment is to remove _____________ substances?
A. Dissolved solid
B. Suspended solid
C. Oil & fatty
D. Gritty & inorganic
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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