MCQ Practice Science 📖 One of the following metals, which one pollutes the air of a busy city? ক cadmiumখ chromiumগ copperঘ lead Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up Previous One liter of water is equivalent to how many kilograms? Next Ozone depletion is caused by----