Environmental Engineering Orthotolidine test is used for determination of Residual chlorine Biochemical oxygen demand Dose of coagulant Dissolved oxygen Residual chlorine Biochemical oxygen demand Dose of coagulant Dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.Reason R: The sand used in slow sand filters is finer than that in rapid sand filtersSelect your answer based on the coding system given below: A is false but R is true Both A and R is true but R is not the correct explanation of A A is true but R is false Both A and R is true and R is the correct explanation of A A is false but R is true Both A and R is true but R is not the correct explanation of A A is true but R is false Both A and R is true and R is the correct explanation of A ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 24 hours 12 hours 5 minutes 1 minute 24 hours 12 hours 5 minutes 1 minute 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 200 ppm 300 ppm 400 ppm 100 ppm 200 ppm 300 ppm 400 ppm 100 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Alkalinity in water is expressed as milligrams per litre in terms of equivalent Calcium carbonate Calcium hydroxide Magnesium carbonate Sodium carbonate Calcium carbonate Calcium hydroxide Magnesium carbonate Sodium carbonate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of filtration in slow sand filters in million litres per day per hectare is about 100 to 150 1400 to 1500 50 to 60 500 to 600 100 to 150 1400 to 1500 50 to 60 500 to 600 ANSWER DOWNLOAD EXAMIANS APP
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