Environmental Engineering The percentage of filtered water, which is used for backwashing in rapid sand filters, is about 2 to 4 5 to 7 0.2 to 0.4 0.4 to 1.0 2 to 4 5 to 7 0.2 to 0.4 0.4 to 1.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The process in which the chlorination is done beyond the break point is known as Pre-chlorination Post chlorination Break point chlorination Super chlorination Pre-chlorination Post chlorination Break point chlorination Super chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The method of analysis of distribution system in which the domestic supply is neglected and fire demand is considered is Equivalent pipe method Circle method Hardy cross method Electrical analysis method Equivalent pipe method Circle method Hardy cross method Electrical analysis method ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hourly variation factor is usually taken as 1.8 2.0 1.5 2.7 1.8 2.0 1.5 2.7 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Sludge volume index is defined as the ratio of Percentage of total solids by weight to percentage of sludge by volume Percentage of sludge by volume to percentage of total solids by weight Percentage of suspended solids by weight to percentage of sludge by volume Percentage of sludge by volume to percentage of suspended solids by weight Percentage of total solids by weight to percentage of sludge by volume Percentage of sludge by volume to percentage of total solids by weight Percentage of suspended solids by weight to percentage of sludge by volume Percentage of sludge by volume to percentage of suspended solids by weight 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 100 ppm 300 ppm 400 ppm 200 ppm 100 ppm 300 ppm 400 ppm 200 ppm ANSWER DOWNLOAD EXAMIANS APP
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