[Solved] Which of the following are the reasons/factors for exposure to benzene pollution? 1. Automobile exhaust 2. Tobacco 3. Wood burning 4. Using varnished wooden furniture 5. Using products made of polyurethane.

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

1. Automobile exhaust

2. Tobacco

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: A

Explanation:

• Benzene is a chemical that is a colorless or light yellow liquid at room temperature.

• It has a sweet odor and is highly flammable.

• Benzene evaporates into the air very quickly. Its vapor is heavier than air and may sink into low-lying areas.

• Benzene dissolves only slightly in water and will float on top of water.

• Benzene is formed from both natural processes and human activities.

• Natural sources of benzene include volcanoes and forest fires.

• Benzene is also a natural part of crude oil, gasoline, and cigarette smoke.

• A major source of benzene exposure is tobacco smoke.

• Outdoor air contains low levels of benzene from tobacco smoke, gas stations, motor vehicle exhaust, and industrial emissions.

• Automobile exhaust accounts for the largest source of benzene in the general environment.

• Indoor air generally contains levels of benzene higher than those in outdoor air.

• The benzene in indoor air comes from products that contain benzene such as glues, paints, furniture wax, and detergents.