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

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 :

[amp_mcq option1=”1, 2 and 3 only” option2=”2 and 4 only” option3=”1, 3 and 4 only” option4=”1, 2, 3, 4 and 5″ correct=”option4″]

This question was previously asked in
UPSC IAS – 2020
Benzene is a volatile organic compound (VOC) and a known carcinogen. All the listed factors contribute to benzene pollution exposure. Automobile exhaust (1) contains benzene from incomplete combustion of fuel. Tobacco smoke (2) is a major source of indoor benzene exposure. Wood burning (3) is another combustion source releasing benzene. Using varnished wooden furniture (4) and products made of polyurethane (5) can off-gas benzene and other VOCs as they may contain solvents or release byproducts containing benzene over time, especially in indoor environments.
Exposure to benzene pollution can occur through combustion sources (vehicles, smoking, burning) and off-gassing from various materials and products (solvents, paints, finishes).
Benzene is also found in crude oil and is used in the manufacture of plastics, resins, synthetic fibers, dyes, detergents, and pesticides. Industrial emissions and hazardous waste sites are other sources. Indoor sources like attached garages (from vehicles), stored fuels, glues, adhesives, paints, and cleaning products also contribute to benzene levels. Given the wide range of sources, it is plausible that all the listed factors contribute to human exposure to benzene.
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