The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called_______________?

Related Mcqs:

¾th or ¼th extra space is left in sewer pipes at maximum discharge for_________________?

A. Low estimates of the average and maximum flows B. Large scale infiltration of storm water C. Unexpected increase in population D. All the above...

Cement concrete sewers are only suitable if non-scouring velocity is between_________________?

A. 2.5 to 3.0 m/sec B. 3.0 to 4.0 m/sec C. 3.5 to 4.5 m/sec D. 4.5 to 5.5 m/sec...

The design period of sewage treatment works in normally_________________?

A. 5 – 10 years B. 15 – 20 years C. 30 – 40 years D. 40 – 50 years...

For detecting the nitrites in the sewage, the matching colour may be developed by adding_________________?

A. Potassium permanganate B. Sulphuric acid and napthamine C. Phenol-di -sulphuric acid potassium hydroxide D. None of these...

Assertion A.: A free board of 0.3 m is provided above the top sewage line in septic tanks. Reason (R): It helps to accommodate the scum in the septic tank_________________?

A. Both A and R is true and R is the correct explanation of A B. Both A and R is 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...