Environmental Engineering in CE Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases. Reduce SO₂ content in None of these Catalytically convert SO₂ to SO₃ in Increase the dew point of Reduce SO₂ content in None of these Catalytically convert SO₂ to SO₃ in Increase the dew point of ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes Nervous depression Gastritis & diarrhea Paralysis of muscles & loss of appetite All of these Nervous depression Gastritis & diarrhea Paralysis of muscles & loss of appetite All of these 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 Fire hazards Explosion hazards Persistent foam Depletion of dissolved oxygen Fire hazards Explosion hazards Persistent foam Depletion of dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The biological decomposition of organic substances in wastes controlled conditions is called None of these Composting Incineration Biological oxidation None of these Composting Incineration Biological oxidation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)? Chemical coagulation Activated carbon adsorption Lagooning Biological oxidation pond Chemical coagulation Activated carbon adsorption Lagooning Biological oxidation pond 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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