Environmental Engineering The detention period for oxidation ponds is usually kept as 48 hours 3 months 10 to 15 days 24 hours 48 hours 3 months 10 to 15 days 24 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Sum of applied and residual chlorine Applied chlorine Residual chlorine Difference of applied and residual chlorine Sum of applied and residual chlorine Applied chlorine Residual chlorine Difference of applied and residual chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The treatment of water with bleaching powder is known as Super chlorination Pre-chlorination Hypo-chlorination De-chlorination Super chlorination Pre-chlorination Hypo-chlorination De-chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In chlorination, with the rise in temperature of water, death rate of bacteria Increases Remains unaffected Decreases None of these Increases Remains unaffected Decreases None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In facultative stabilization pond, the sewage is treated by Algae only Aerobic bacteria only Sedimentation Dual action of aerobic bacteria and anaerobic bacteria Algae only Aerobic bacteria only Sedimentation Dual action of aerobic bacteria and anaerobic bacteria ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum permissible limit for fluoride in drinking water is 5 mg/liter 1.5 mg/liter 0.1 mg/liter 10 mg/liter 5 mg/liter 1.5 mg/liter 0.1 mg/liter 10 mg/liter ANSWER DOWNLOAD EXAMIANS APP
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