Main constituents of coal gas are :
A. H2O, C2H6 , O2
B. CH4 , CO2 , O2
C. CH4 , H2 , CO
D. C2H6 , N2 , O2
Answer:C
Main constituents of coal gas are :
A. H2O, C2H6 , O2 B. CH4 , CO2 , O2 C. CH4 , H2 , CO D. C2H6 , N2 , O2