Scale formation in boiler is controlled by____________________?

Related Mcqs:

Smog is ______________________?

A. Nothing but black smoke B. A combination of smoke and fog C. A liquid particle resulting from vapor condensation D. A solid particle e.g. fly-ash...

Which of the following is the most widely used disinfectant in water treatment ?

A. Chlorine B. Irradiation of water by ultraviolet light C. Cation exchanger D. Coagulation...

Permissible safe limit (TLV) of _____________ toxic gas is 100-1000 parts per million (ppm)?

A. Highly B. Moderately C. Extremely D. Very extremely...

The widest explosive limit is of _____________, thereby making it the most explosive gas?

A. Acetylene B. Petrol vapor C. Hydrogen D. Carbon monoxide...

_____________ plant emits large amount of SO2 as an air pollutant?

A. Nitric acid B. Sulphuric acid C. Chlor alkali D. Iron & steel...