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Question

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:

(a) 1, 2 and 3 only
(b) 2 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3, 4 and 5

Answer:

D

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Explanation:

1. Automobile exhaust: Benzene is present in vehicle emissions, particularly in gasoline exhaust. It is a natural part of crude oil and gasoline, and it is released during the combustion of these fuels in automobile engines.

2. Tobacco smoke: Benzene is a natural component of cigarette smoke. Smoking and exposure to secondhand smoke can result in significant exposure to benzene.

3. Wood burning: Benzene can be released during the burning of wood, including wood-burning stoves, fireplaces, and forest fires.

4. Using varnished wooden furniture: Varnished wooden furniture can emit benzene and other volatile organic compounds (VOCs) over time. These compounds are released from the varnish and can contribute to indoor air pollution.

5. Using products made of polyurethane: Polyurethane is commonly used in soft furnishings and insulation. During thermal decomposition, polyurethane can release benzene along with other compounds such as toluene, oxides of nitrogen, hydrogen cyanide, and others.

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