‘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____________________? | MCQ Hive

Chemical Engineering Chemical Environmental Engineering

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

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