Environmental Engineering in CE Noise level in a quiet private business office is about __________ decibels. 85 70 50 25 85 70 50 25 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 Lagooning Biological oxidation pond Activated carbon adsorption Chemical coagulation Lagooning Biological oxidation pond Activated carbon adsorption ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) of CO in air is __________ ppm. 5000 50 5 2000 5000 50 5 2000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water Both (i) and (iii) Both (i) and (ii) Only (iii) Only (i) Both (i) and (iii) Both (i) and (ii) Only (iii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm. 500 5 10000 1000 500 5 10000 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank. Sedimentation Both B and C Filtration Digestion Sedimentation Both B and C Filtration Digestion ANSWER DOWNLOAD EXAMIANS APP
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