HomeEveryday Science MCQsBrass gets discoloured in air because of the presence of which of the following gases in air ________ ? 466. Brass gets discoloured in air because of the presence of which of the following gases in air ________ ?By Admin / September 17, 2025 A. Carbon dioxide B. Oxygen C. Nitrogen D. Hydrogen sulphide ✅ The correct answer is option D.
1. Which of the following does not pollute the air? Leave a Comment / Everyday Science MCQs / By Admin
2. Which of the following planets have the longest day? Leave a Comment / Everyday Science MCQs / By Admin