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

  • (A) Hydrogen sulphide
  • (B) Carbon dioxide
  • (C) Nitrogen
  • (D) Oxygen
✅ Correct Answer: (A) Hydrogen sulphide

Published by Ram Sharma ⭐ 193.88K Points at 13-Jan-2022 08:42 am in Chemistry

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