Question
Explain why, we are advised not to sleep in a room having closed doors and windows, with a coal fire burning inside.
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Answer
Due to the burning of coal, the available oxygen gets depleted and it leads to incomplete burning of coal. Incomplete combustion of coal gives carbon monoxide gas. It is a very poisonous gas. It is dangerous to burn coal in a closed room. The carbon monoxide gas produced can kill persons sleeping in that closed room.
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