Environmental Engineering Period of cleaning of slow sand filters is about 1 - 2 year 24 - 48 hours 10 - 12 days 2 - 3 months 1 - 2 year 24 - 48 hours 10 - 12 days 2 - 3 months 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 The major disadvantage of lime soda process of water softening is that It is unsuitable for softening the water of excessive hardness The effluent cannot be reduced to zero hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water It is unsuitable for softening the water of excessive hardness The effluent cannot be reduced to zero hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period for oxidation ponds is usually kept as 10 to 15 days 48 hours 24 hours 3 months 10 to 15 days 48 hours 24 hours 3 months ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering An egg shaped section of sewer Is easy to construct Provides self cleansing velocity at low discharges Is economical than circular section Is more stable than circular section Is easy to construct Provides self cleansing velocity at low discharges Is economical than circular section Is more stable than circular section ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Residual chlorine in water is determined by Orthotolidine method None of these Both (A) and (B) Starch iodide method Orthotolidine method None of these Both (A) and (B) Starch iodide method ANSWER DOWNLOAD EXAMIANS APP
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