Which of the following factors help to measure quallity of water ?

Related Mcqs:

Newspaper can be recycled again and again how many times ?

A. 2 B. 3 C. 4 D. 5...

The main pollutant of leather tanneries in the waste water is____________________?

A. chromium III B. chromium IV C. chromium V D. chromium VI...

Which substance can be used for disinfecting water ?

A. KMnO4 B. Alums C. Ozone D. All...

The yellow colour in photochemical smog is due to presence of__________________?

A. dinitrogen oxide B. nitrogen dioxide C. chlorine gas D. chlorine dioxide...

Which of the following is not primary pollutant__________________?

A. SO3 B. CO C. NO D. H2SO4...