Question

what do you observe when coal is heated in the 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.

Answer 2

Explanation:

I THINK THAT THE COAL WOULD NOT BURN