Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which 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...

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in____________________?

A. Coagulation and flocculation of colloids B. Oxidation of carbonaceous matter to CO2 C. Nitrification or oxidation of ammonia derived from breakdown of nitrogenous organic matter to the nitrite and eventually to the nitrate D. All A., B. and C....

Which of the following is not a source of ozone emission in the atmosphere?

A. Refrigerators B. Xerox machines C. Dermatological photo-therapy equipments D. High voltage electrical equipments...

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...