1. C2H4 + H2 = C2H6
2. C2H4 + Cl2 = C2H4Cl2
3. CH3- CH = CH2 + HBr = CH3 - CH(Br)- CH3
4. H2C = CH2 + H2O = CH3 -CH2OH
5. H3C - CH= CH2 + H2O = H3C-CH(OH)-CH3
6. nC2H4 = [- H2C - CH2-]n
7. H2C=CH2 + 3O2 = 2CO2 + 2H2O
8. H2C=CH2 + [O] + H2O = CH2(OH) -CH2(OH)