Question

coal gas is poisonous because it contains options are co2 and ch4,c2h2 and co2,co and hcn,ch4 and c2h4

Answer 1

Answer:

your answer is = coal gas contains co2 and ch4

Answer 2

carbon monoxide, carbon dioxide, hydrocarbon, nitrogen...

in which poisonous is carbon monoxide....though answer is co2 and ch4