Presence of iron and manganese in water causes___________________?

Related Mcqs:

Pick out the wrong statement?

A. A slight haze at the top of chimney indicates good combustion in the furnace B. A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature C. Electrostatic precipitator is the most efficient dust collection equipment for removal of submicronic … Pick out the wrong statement?Read More...

Presence of a certain minimum quantity of fluorine is desirable in potable water to prevent___________________?

A. Dental cavities B. Scale formation C. Water-borne disease D. Corrosion...

Ringelmann chart is used for the evaluation of _____________ pollution?

A. Air B. Water C. Noise D. Radioactive...

Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?

A. Dust catcher (gravity type) B. Cyclone separator C. Bag filter D. Hollow wet scrubber...

Tolerable limit of nitrogen oxides in air is _____________ ppm?

A. 0.1 B. 1 C. 5 D. 25...