Environmental Engineering in CE The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? Benzene hexachloride Chlorine Alkyl benzene sulphonate (ABS) Alkalis Benzene hexachloride Chlorine Alkyl benzene sulphonate (ABS) Alkalis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 230 1500 750 20 230 1500 750 20 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. Saphrophytic Anaerobic Parasitic Aerobic Saphrophytic Anaerobic Parasitic Aerobic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream? Mechanical flocculation Sedimentation tank Circular clarifier Chemical coagulation Mechanical flocculation Sedimentation tank Circular clarifier Chemical coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a practical method of low level radioactive waste disposal? Filling in steel crates and shooting it off out of earth Dilution with inert material Disposing off in rivers & oceans Discharging to atmosphere through tall stacks after dilution Filling in steel crates and shooting it off out of earth Dilution with inert material Disposing off in rivers & oceans Discharging to atmosphere through tall stacks after dilution ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Brown spots in fabrics will be caused by washing with water containing large amount of . Bromine Iodine Iron Zinc Bromine Iodine Iron Zinc ANSWER DOWNLOAD EXAMIANS APP
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