Presence of nitrates in water in excess of 50 ppm causes________________?

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In water treatment plant, zeolite process is used to remove the _____________ of water?

A. Acidity B. Alkalinity C. Hardness D. Iron & zinc...

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...

Removal of ______________ is accomplished by aeration of water?

A. Dissolved gases B. Suspended solids C. Dissolved solids D. None of these...

Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes__________________?

A. Blood poisoning B. Anaemia C. Nervous system disorder D. All A., B. & C....

Color test of water is done with an instrument called__________________?

A. Tintometer B. Colorimeter C. Electro-chemical cell D. Turbidimeter...