CH4+Cl2=CH3Cl+HCl
2CH3Cl+2Na=C2H6+2NaCl
C2H6(t) =C2H4+H2
3H2C=CH2+2KMnO4+4H2O=3H2COH-CH2OH +2MnO2+2KOH
H2COH-CH2OH+2Na =H2CONa - CH2ONa +H2
.....................................................................................................................................................................
......................................................................................................................................................................
..............................................................................................................................................................