Chlorine demand of water is equal to________________?

Related Mcqs:

As compared to shallow-wells, deep wells have______________?

A. more depth B. less depth C. more discharge D. less discharge...

The percentage of filtered water, which is used for backwashing in rapid sand filters, is about______________?

A. 0.2 to 0.4 B. 0.4 to 1.0 C. 2 to 4 D. 5 to 7...

Which of the following unit works in anaerobic conditions ?

A. sludge digestion tank B. sedimentation tank C. activated sludge treatment D. trickling filters...

The detention period for oxidation ponds is usually kept as______________?

A. 4-8 hours B. 24 hours C. 10 to 15 days D. 3 months...

Which of the following chemical compounds can be used for dechlorination of water ?

A. carbon dioxide B. bleaching powder C. sulphur dioxide D. chloramines...