Which of the following is a secondary air pollutant ?

Related Mcqs:

Which of the following is not a weightless pollutant ?

A. SPM B. Thermal pollution C. Radioactive rays D. Noise pollution...

Threshold limit value (TLV) of CO in air is _____________ ppm?

A. 5 B. 50 C. 2000 D. 5000...

Deaeration of high pressure boiler feed water is done to reduce ___________________?

A. Foaming from boilers B. Its dissolved oxygen content C. Its silica content D. Caustic embrittlement...

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

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

‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?

A. Industrial chimney exhaust B. Automobiles exhaust C. Photochemical reaction in polluted atmosphere D. Burning of domestic fuel...