MCQ Practice Bangladesh 📖 Which is the hazardous metallic pollutant in the air of the Dhaka city ? A Arsenic B Carbon C Lead D Zinc 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 Tech-Bangla কি ? Nextযানবাহনের কালো ধোঁয়া কিভাবে পরিবেশকে দূষিত করে ?