Discussion
Which of the following causes maximum indoor chemical pollution ?
Answer: C
The key's answer is Burning coal.
Coal burned indoors in stoves and chulhas releases carbon monoxide, sulphur dioxide, nitrogen oxides, fine particulate matter and toxic compounds such as polycyclic aromatic hydrocarbons and arsenic or fluorine from some coals. Solid fuel burning is a leading cause of household air pollution in India.
Room sprays and mosquito coils do release irritants and particles, but in small amounts for short periods. Cooking gas (LPG) is a clean fuel compared with coal, which is why replacing solid fuels with LPG is the aim of schemes like Ujjwala.
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