Home ยป The threshold limit of benzene is Air Pollution MCQs The threshold limit of benzene is December 29, 2021 23 Views Q. The threshold limit of benzene is 15ppm20ppm25ppm30ppm Answer: 25ppm
Which one of the following pollutant (or) pairs of pollutants is formed due to photochemical reactions?
The particulate which is emitted by combustion of petroleum in automobiles and which affects hemoglobin formation is