Environmental Engineering in CE Fresh domestic sewage is __________ in color. Dark brown Red Grey Black Dark brown Red Grey Black ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present as pollutant in water can not be removed by Lime soda process or manganese zeolite process Chlorination Oxidation followed by settling & filtration Ion exchange process Lime soda process or manganese zeolite process Chlorination Oxidation followed by settling & filtration Ion exchange process ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. Parasitic Saphrophytic Anaerobic Aerobic Parasitic Saphrophytic Anaerobic Aerobic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Pick out the one which is not a chemical coagulant. Chloramine Ferrous sulphate Aluminium sulphate Hydrated lime Chloramine Ferrous sulphate Aluminium sulphate Hydrated lime ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO₂ in air is __________ ppm. 1000 5 2000 500 1000 5 2000 500 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 Activated carbon adsorption Biological oxidation pond Chemical coagulation Lagooning Activated carbon adsorption Biological oxidation pond ANSWER DOWNLOAD EXAMIANS APP
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