Environmental Engineering in CE Which of the following is not a secondary air pollutant? Photochemical smog All of these Ozone Sulphur dioxide Photochemical smog All of these Ozone Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chlorination only Chemical coagulation Oxidation followed by settling & filtration Simple filtration Chlorination only Chemical coagulation Oxidation followed by settling & filtration Simple filtration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In a sedimentation tank, the detention period for water ranges from __________ hours. 2 to 4 16 to 20 8 to 12 24 to 32 2 to 4 16 to 20 8 to 12 24 to 32 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The earth's atmosphere is an envelope of gases present upto a height of about __________ kms. 10 1000 2000 200 10 1000 2000 200 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE H₂S present in gaseous stream can be removed by adsorption on Bog iron Silica gel Active carbon Limestone powder Bog iron Silica gel Active carbon Limestone powder ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smog is A combination of smoke and fog Nothing but black smoke A solid particle e.g. flyash A liquid particle resulting from vapor condensation A combination of smoke and fog Nothing but black smoke A solid particle e.g. flyash A liquid particle resulting from vapor condensation ANSWER DOWNLOAD EXAMIANS APP
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