Which of the following is the most major constituents of air pollutants ?

Related Mcqs:

Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?

A. Chemical coagulation B. Floatation & skimming C. Centrifugation D. Ultra filtration...

Which is the most practical and economical method for removal of suspended solid matter from polluted water ?

A. Sedimentation B. Skimming off C. Chlorination D. Biological oxidation...

World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in ___________________?

A. Arizona (U.S.A.) B. Chernobyl (undivided U.S.S.R.) C. Pennsylvania (U.S.A.) D. Moscow (U.S.S.R.)...

Presence of high concentration of ozone and smog in atmospheric air causes the __________________?

A. Embrittlement & decrease of folding resistance of paper B. Cracking of rubber products C. Fading of dye on textiles D. Damage of electrical insulator on high tension power line...

Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly _____________ substances?

A. Radioactive B. Organic C. Inorganic D. None of these...