The pH value of oxidised sewage is about_____________________?

Related Mcqs:

Global warming may result in __________________?

A. Flood B. Cyclone C. Decrease in food productivity D. All A., B. and C....

Iron & manganese present as pollutant in water cannot be removed by__________________?

A. Ion exchange process B. Oxidation followed by settling & filtration C. Lime soda process or manganese zeolite process D. Chlorination...

Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about ______________ decibels?

A. 75 B. 95 C. 120 D. 140...

The lowest layer of atmosphere is known as the_____________________?

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

Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream ?

A. Sedimentation tank B. Circular clarifier C. Mechanical flocculation D. Chemical coagulation...