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Which of the following are the reasons / factors for exposure to benzene pollution?

1. Automobile exhaust

2. Tobacco smoke

3. Wood burning

4. Using varnished wooden furniture

5. Using products made of polyurethane

Select the correct answer using the code given below :-

I.A.S. (Pre.) 2020

[Energy Sources & Pollution]
A
B
C
D

EXPLANATION

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