Environmental Engineering The rate of filtration in slow sand filters in million litres per day per hectare is about 100 to 150 500 to 600 1400 to 1500 50 to 60 100 to 150 500 to 600 1400 to 1500 50 to 60 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 5 minutes 24 hours 1 minute 12 hours 5 minutes 24 hours 1 minute 12 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of Alteration of pressure filters is Less than that of slow sand filters In between the filtration rate of slow sand filters and rapid sand filters Greater than that of rapid sand filters Equal to that of slow sand filters Less than that of slow sand filters In between the filtration rate of slow sand filters and rapid sand filters Greater than that of rapid sand filters Equal to that of slow sand filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Dissolved oxygen in streams is Same throughout the day Maximum at midnight Minimum at noon Maximum at noon Same throughout the day Maximum at midnight Minimum at noon Maximum at noon ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In lime-soda process Only noncarbonated hardness is removed Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Only carbonate hardness is removed Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Only noncarbonated hardness is removed Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Only carbonate hardness is removed Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In facultative stabilization pond, the sewage is treated by Aerobic bacteria only Dual action of aerobic bacteria and anaerobic bacteria Sedimentation Algae only Aerobic bacteria only Dual action of aerobic bacteria and anaerobic bacteria Sedimentation Algae only ANSWER DOWNLOAD EXAMIANS APP
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