The most commonly used substance to speed up the sedimentation of sewage is___________________?

Related Mcqs:

The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about ________________ cm2/gm?

A. 800 B. 1600 C. 4000 D. 8500...

Starting raw material for the manufacture of Maleic anhydride is___________________?

A. n-butene B. Benzene C. Either A. or B. D. Neither A. nor B....

Catalyst used in the hydrogenation of oil is_________________?

A. Nickel B. Platinum C. Iron D. Alumina...

Phenol formaldehyde resin is used as an adhesive in making__________________?

A. Laminates B. Card boxes C. Furniture D. Books...

Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the _____________ process?

A. Mechanical B. Sulphate/Kraft C. Sulphite D. Neutral sulphite semi-chemical...