‘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
| Share this... |
 Facebook
|
 Twitter
|
 Linkedin
|
 Whatsapp
|
Your email address will not be published. Required fields are marked *
