Pick up the correct statement from the following ?

Related Mcqs:

1000 kg of sewage contains________________?

A. 0.112 kg in suspension B. 0.112 kg in solution C. 0.225 kg in solution D. Both A. and C. of above...

Sludge banks are formed if sewage is disposed of in____________________ ?

A. Rivers B. Seas C. Lakes D. None of these...

Assertion A. : Discharging the effluents from the oxidation ponds just up stream of lakes or reservoirs is undesirable. Reason (R) : The discharged algae get settled in the reservoirs and cause anaerobic decomposition and other water qualities_________________?

A. Both A and R are true and R is the correct explanation of A B. Both A and R are true but R is not a correct explanation of A C. A is true but R is false D. A is false but R is true...

The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known_____________________?

A. House sewer B. Lateral sewer C. Branch sewer D. Sewer outfall...

If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is____________________?

A. 200 ppm B. 225 ppm C. 250 ppm D. None of these...