In sewage treatment, the detention period allowed for oxidation ponds ranges from _____________ weeks?

Related Mcqs:

Pick out the wrong statement?

A. A slight haze at the top of chimney indicates good combustion in the furnace B. A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature C. Electrostatic precipitator is the most efficient dust collection equipment for removal of submicronic … Pick out the wrong statement?Read More...

TLV of mercury in potable (drinking) water is about ______________ ppm?

A. 0.001 B. 0.1 C. 1 D. 5...

The lowest layer of atmosphere is known as the_____________________?

A. Stratosphere B. Troposphere C. Ionosphere D. None of these...

Shouting by a man at his full voice corresponds to a voice level of about _____________ decibels?

A. 25 B. 50 C. 80 D. 120...

BOD of raw municipal sewage may be in the range of about _____________ mg/litre?

A. 1-2 B. 5-10 C. 150-300 D. 2000-3000...