Dissolved oxygen content in river water is around _____________ ppm?

Related Mcqs:

Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about _______________ decibels?

A. 105 B. 135 C. 160 D. 185...

Out of the following, TLV of _______________ is maximum (about 500 ppm)?

A. Carbon dioxide B. Toluene C. Carbon disulphide D. Acetaldehyde...

Exposure to chemicals having carcinogenic properties cause ____________________?

A. Dermatitis (skin disorder) B. Cancer C. Asphyxiation (suffocation) D. Asthma...

Infective bacteria in water is killed by the _____________ process?

A. Sterilisation B. Aeration C. Disinfection D. None of these...

Turbidity of water is an indication of the presence of__________________?

A. Suspended inorganic matter B. Dissolved solids C. Floating solids D. Dissolved gases...