Q263
Of the following, which one pollutes the air of a big city ?
A.
Copper
B.
Chromium
C.
Lead
AnswerD.
Cadmium
Answer: Option C
Solution
Answer: Option C
Solution:
Lead pollution primarily came from cars in the past. Today, lead pollution primarily comes from lead smelters, metal processing plants and incinerators. Deposits of lead in soil can harm both humans and animals by absorbing it into a body.