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.Management Sciences
Category: Chemical Environmental Engineering
Which of the following acts as a natural source of air pollution ?
A. Forest fire
B. Deforestation
C. Volcanic eruption
D. None of these
Pick out the correct statement ?
A. Deforestation helps in controlling the green house effect
B. Global warming is detrimental for increase in food productivity and may cause flood and
cyclone
C. Lightening discharges are natural source of production of SO2 & H2S pollutant
D. Sulphur dioxide causes death by asphyxiation
Foul odour and bad taste of water is removed by treating with__________________?
A. Alum
B. Bleaching powder
C. Activated carbon
D. Copper sulphate
The biological decomposition of organic substances in wastes controlled conditions is called_________________?
A. Incineration
B. Biological oxidation
C. Composting
D. None of these
Dust collection efficiency of a cyclone separator depends upon its______________?
A. Diameter
B. Inlet gas velocity
C. Overall height
D. All A., B. & C.
______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?
A. Calcium
B. Fluorine
C. Phosphorous
D. Sulphur
World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in ___________________?
A. Arizona (U.S.A.)
B. Chernobyl (undivided U.S.S.R.)
C. Pennsylvania (U.S.A.)
D. Moscow (U.S.S.R.)
‘Pneumoconiosis’ is a disease caused by the inhalation of ______________ dust?
A. Coal
B. Uranium ore
C. Iron ore
D. Lime
Noise pollution level in a chemical plant is expressed in __________________?
A. Roentgen
B. Decibel
C. Hertz
D. None of these
The term Biological Oxygen Demand (BOD) is used in relation to ______________________?
A. Potable water
B. Cooling water
C. Distilled water
D. Industrial effluents
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