(a) Bromination of ethylene :
Ethylene reacts with bromine to form 1, 2-dibromo ethane.
(b) Polymerization of ethylene :
Ethylene undergoes addition polymerization, when heated under pressure, in the presence of peroxide catalyst.
(c) Markownikoffs rule :
According to this rule, “the negative part of the unsymmetrical attacking regent attaches to that carbon atom of the double bond of unsymmetrical alkene which bears the least number of hydrogen atoms.”
(d) Ozonolysis :
When ethylene reacts with ozone, it gives ethene ozonide
