Environmental Engineering The water carriage system of collection of waste product Requires treatment before disposal Creates hygienic problem Is cheaper in initial cost than dry conservancy system All of these Requires treatment before disposal Creates hygienic problem Is cheaper in initial cost than dry conservancy system All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be 300 ppm 200 ppm 100 ppm 400 ppm 300 ppm 200 ppm 100 ppm 400 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hourly variation factor is usually taken as 2.0 2.7 1.5 1.8 2.0 2.7 1.5 1.8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The process in which the chlorination is done beyond the break point is known as Post chlorination Break point chlorination Super chlorination Pre-chlorination Post chlorination Break point chlorination Super chlorination Pre-chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Residual chlorine Sum of applied and residual chlorine Difference of applied and residual chlorine Applied chlorine Residual chlorine Sum of applied and residual chlorine Difference of applied and residual chlorine Applied chlorine 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 Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water The effluent cannot be reduced to zero hardness It is unsuitable for softening the water of excessive hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water The effluent cannot be reduced to zero hardness ANSWER DOWNLOAD EXAMIANS APP
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