Question

which gas is formed when coal is heated in ​absence of air

Answer 1

Answer:

Coal gas, gaseous mixture—mainly hydrogen, methane, and carbon monoxide—formed by the destructive distillation (i.e., heating in the absence of air) of bituminous coal and used as a fuel. Sometimes steam is added to react with the hot coke, thus increasing the yield of gas.

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Answer 2

Coal gas, gaseous mixture—mainly hydrogen, methane, and carbon monoxide

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