Presence of bacteria in potable (drinking) water causes_________________?

Related Mcqs:

______________ is the process of killing organism in water ?

A. Coagulation B. Sterilisation C. Disinfection D. Sedimentation...

Biological oxidation ponds remove organic matters present in the polluted water by _______________?

A. Using the activities of bacteria and other micro organisms B. Aerobic oxidation C. Both A. & B. D. Neither A. nor B....

Which of the following pollutants, if present in atmosphere is detectable by its odour ?

A. CO B. SO2 C. NO2 D. CO2...

Lagooning process is mainly a means of the__________________?

A. Sludge disposal B. Reduction of excessive flow in sewers C. Biological treatment of wastes D. None of these...

Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gasair mixture), rendering it the property of the most explosive gas ?

A. Hydrogen B. Acetylene C. Carbon monoxide D. Ammonia...