Question

Brass gets discoloured in air because of the presence of which of the following gases in air?

A. Oxygen
B. Hydrogen sulphide
C. Carbon dioxide
D. Nitrogen

Answer 1

your answer is B

sorry i messed up

Answer 2

- Option B.

(Hydrogen Sulfide)

hopefully my answer helps! ♡

(if my answers helped you please tell me, therefore I know.. that I did them correctly or incorrectly. anyways, have a great day/night!)