Q. Which of the following one of the following metals pollutes the air of a city having big number of automobiles

  • (A) Copper
  • (B) Cadmium
  • (C) Lead
  • (D) Chromium
✅ Correct Answer: (C) Lead

Published by Ram Sharma ⭐ 193.88K Points at 02-Mar-2022 10:17 am in Science

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