Question

What is the threshold limit value for $H_2S$?
A) 10ppm
B) 20ppm
C) 30ppm
D) 40ppm

Answer 1

Hint: The threshold limit is the average concentration of the harmful and toxic substances present and if exposed would not cause any adverse effect on the health. Hydrogen sulphide is one of the major pollutants in the atmosphere and can kill a person even if a small amount of it is present in the atmosphere.

Complete answer:
To answer this question, we must know about the effects of hydrogen sulphide in health and environment.Hydrogen sulphide is one of the dangerous pollutants which can cause immediate dangerous effects on life and health.