Environmental Engineering in CE The pH value of oxidised sewage is about 13.4 7.3 6.2 1.8 13.4 7.3 6.2 1.8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Average human body contains about __________ percent water by weight. 70 20 40 85 70 20 40 85 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Aerobic oxidation Using the activities of bacteria and other micro organisms Neither A nor B Both A & B Aerobic oxidation Using the activities of bacteria and other micro organisms Neither A nor B Both A & B 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 By chemical coagulation In sedimentation tanks equipped with mechanical scrapper In vacuum filter In clarifiers By chemical coagulation In sedimentation tanks equipped with mechanical scrapper In vacuum filter In clarifiers ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foul odour and bad taste of water is removed by treating with Copper sulphate Bleaching powder Activated carbon Alum Copper sulphate Bleaching powder Activated carbon Alum ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes Persistent foam Explosion hazards Depletion of dissolved oxygen Fire hazards Persistent foam Explosion hazards Depletion of dissolved oxygen Fire hazards ANSWER DOWNLOAD EXAMIANS APP
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