Which of the following is a manmade source of air pollution ?

Related Mcqs:

High noise levels produced during operation of fans and compressors can be reduced by using__________________?

A. Mufflers (silencers) B. Acoustic absorbent C. Lagging of noisy duct D. None of these...

Most efficient and suitable dust removal equipment for removal of fly-ash from flue gas in a thermal power plant is the__________________?

A. Gravity settling chamber B. Cyclone separator C. Electrostatic precipitator D. Bag filter...

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.)...

Color test of water is done with an instrument called__________________?

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

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...