Environmental Engineering in CE Which of the following sources is responsible for maximum air pollution? Industrial chimney exhaust Forest fire Automobiles exhaust Photochemical oxidation of organic matter Industrial chimney exhaust Forest fire Automobiles exhaust Photochemical oxidation of organic matter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ in water stream are deleterious to aquatic life. Suspended solids All of these Heavy metals and cynides Soluble and toxic organics Suspended solids All of these Heavy metals and cynides Soluble and toxic organics ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of coagulant needed for coagulation of water increases with(i) Increase in turbidity of water(ii) Decrease in turbidity of water(iii) Increase in temperature of water(iv) Decrease in temperature of waterThe correct answer is (i) and (ii) (ii) and (iv) (i)and(iv) (ii) and (iii) (i) and (ii) (ii) and (iv) (i)and(iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters? I-131 Sr-90 Ra-226 Au-198 I-131 Sr-90 Ra-226 Au-198 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of excess flourine in water causes Tooth decay Fluorosis Dental cavity Respiratory disease Tooth decay Fluorosis Dental cavity Respiratory disease 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 Biological oxidation pond Activated carbon adsorption Lagooning Chemical coagulation Biological oxidation pond Activated carbon adsorption Lagooning ANSWER DOWNLOAD EXAMIANS APP
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