Which gas is evolved by incomplete combustion of wood or coal? a)Co2 b)N2 c)O2 d)CO

due to incomplete combustion of wood or coal carbon monoxide(CO) is released.so the answer will be d)CO

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c)o2 answer
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answer d) CO carbon monoxide
 
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d) co is released
 
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 sorry, d)co is right option.
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Bro if u burn wood or charcoal it would definetly lead to release of gas like co2 but incomplete combustion leads to release of co which is harmful we all know that o2 is needed for combustion but when it does not happen co is released
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