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29/01/2022 7:59 pm
Topic starter
Among the following which one causes more indoor chemical pollution?
(a) Burning coal
(b) Burning cooking gas
(c) Burning mosquito coil
(d) Room spray
1 Answer
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29/01/2022 8:00 pm
Correct answer: (a) Burning coal
Explanation:
Burning coal causes more indoor chemical pollution.