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lakshmi

· started a discussion

· 1 Months ago

(Question:460503.0)

Lead

Question:
Which one of the following metals pollutes the air of a city having large number of automobiles ?
Options:
A) Cadmium
B) Chromium
C) Lead
D) Copper
Solution:
Ans:(c) The history of car pollution has been one of air and water contamination followed by regulated improvement. Cars and trucks cause a lot of air  pollution in the world today, and contribute a lot to the most common and dangerous air pollutants. About 2.3 million tons of lead in lead acid (PbA) batteries is on the road, lead pollutes the air having large number of autombiles.

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