Highest source of air pollution in the world is

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Q: 185 (SSC/NA)
Highest source of air pollution in the world is
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 Q. 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

question_subject: 

Science

question_exam: 

SSC

stats: 

0,42,61,42,54,4,3

keywords: 

{'air pollution': [5, 0, 0, 3], 'highest source': [2, 0, 0, 0], 'household wastes': [1, 0, 0, 0], 'automobiles': [1, 0, 4, 2], 'industries': [6, 0, 2, 2], 'aircraft': [1, 0, 5, 6]}