Environmental Engineering in CE In water treatment, alum[Al2(SO₄)3] is used for the process of Disinfection Filtration Coagulation Sedimentation Disinfection Filtration Coagulation Sedimentation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Most of the bacteria in sewage are Anerobic Parasitic Saprophytic None of these Anerobic Parasitic Saprophytic None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The earth's atmosphere is an envelope of gases present upto a height of about __________ kms. 200 1000 2000 10 200 1000 2000 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal In vacuum filter In clarifiers In sedimentation tanks equipped with mechanical scrapper By chemical coagulation In vacuum filter In clarifiers In sedimentation tanks equipped with mechanical scrapper By chemical coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Corrosion in boilers can be prevented by All of these Deaeration of feed water Enhancing pH of feed water by adding alkali Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion All of these Deaeration of feed water Enhancing pH of feed water by adding alkali Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using Lagging of noisy duct None of these Mufflers (silencers) Accoustical absorbent Lagging of noisy duct None of these Mufflers (silencers) Accoustical absorbent ANSWER DOWNLOAD EXAMIANS APP
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