Environmental Engineering Which of the following compounds is widely used for algae control? Calcium chloride Sodium sulphate Copper sulphate Sodium chloride Calcium chloride Sodium sulphate Copper sulphate Sodium chloride ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period in coagulation tanks is usually kept as 2 to 6 hours 2 to 6 days 30 to 45 minutes 1 to 2 minutes 2 to 6 hours 2 to 6 days 30 to 45 minutes 1 to 2 minutes ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The amount of coagulant needed for coagulation of water increases with (i) Increase in turbidity of water (ii) Decrease in turbidity of water (iii) Increase in temperature of water (iv) Decrease in temperature of water The correct answer is (ii) and (iv) (i)and(iv) (ii) and (iii) (i) and (ii) (ii) and (iv) (i)and(iv) (ii) and (iii) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called Lateral sewer Sub-main sewer House sewer Main sewer Lateral sewer Sub-main sewer House sewer Main sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering An egg shaped section of sewer 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 Is easy to construct Provides self cleansing velocity at low discharges 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 400 ppm 100 ppm 300 ppm 200 ppm 400 ppm 100 ppm 300 ppm ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS