Which of the following is an inorganic gaseous pollutant of air ?
A. Methane
B. Phosgene
C. Hydrogen Cyanide
D. Hydrogen Sulphide
Answer:D
Which of the following is an inorganic gaseous pollutant of air ?
A. Methane B. Phosgene C. Hydrogen Cyanide D. Hydrogen Sulphide