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प्रश्न
Polycyclic aromatic hydrocarbons are produced from the combustion of which materials?
विकल्प
Natural mineral deposits only
Plant-based medicinal compounds
Coal, petroleum, and other organic matter
Radioactive elements in the atmosphere
MCQ
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उत्तर
Polycyclic aromatic hydrocarbons are produced from the combustion of coal, petroleum, and other organic matter. These are chemical carcinogens generated when these materials undergo incomplete combustion, and exposure to them increases cancer risk.
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