Environmental Engineering Which of the following retards the self purification of stream? None of these Satisfying oxygen demand Higher temperature Sunlight None of these Satisfying oxygen demand Higher temperature Sunlight ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as 10.5 to 12.0 8.5 to 10.0 4.5 to 6.0 6.5 to 8.0 10.5 to 12.0 8.5 to 10.0 4.5 to 6.0 6.5 to 8.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Residual chlorine Difference of applied and residual chlorine Applied chlorine Sum of applied and residual chlorine Residual chlorine Difference of applied and residual chlorine Applied chlorine Sum of applied and residual chlorine 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 400 ppm 300 ppm 100 ppm 200 ppm 400 ppm 300 ppm 100 ppm 200 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The percentage of filtered water, which is used for backwashing in rapid sand filters, is about 0.4 to 1.0 0.2 to 0.4 5 to 7 2 to 4 0.4 to 1.0 0.2 to 0.4 5 to 7 2 to 4 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to geometrical increase method of forecasting population, arithmetical increase method gives Same value Higher value Lesser value Accurate value Same value Higher value Lesser value Accurate value ANSWER DOWNLOAD EXAMIANS APP
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