Q. Black smoke coming out of the chimney of a furnace is an indication of the use of _________ in the furnace.
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Correct Answer: (A)
Low amount of excess combustion air
Environmental Engineering MCQs | Page - 4
Dear candidates you will find MCQ questions of Environmental Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. BOD of raw municipal sewage may be in the range of about _________ mg/litre.
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Correct Answer: (C)
150-300
Q. Brown spots in fabrics will be caused by washing with water containing large amount of
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Correct Answer: (A)
Iron
Q. Carbon monoxide is a pollutant, which causes
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Correct Answer: (B)
Asphyxiation (suffocation) leading to death
Q. Carbonaceous particles having size less than 1 ΞΌm are called
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Correct Answer: (D)
Smoke
Q. Carcinogenic air pollutants cause
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Correct Answer: (B)
Cancer
Q. CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing _________ molecules of ozone.
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Correct Answer: (B)
105
Q. Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal
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Correct Answer: (B)
In sedimentation tanks equipped with mechanical scrapper
Q. COD of raw municipal sewage may be in the range of about _________ mg/litre.
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Correct Answer: (C)
90-120
Q. Color test of water is done with an instrument called
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Correct Answer: (A)
Tintometer
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