question

(i) is  a homopolymer or copolymer?give reasons.

(ii) write monomers of the following polymers:

        

(iii) what is the role of sulphur in vulcanization of rubber?

 

 

 

 

 

 

 

 

(i) homopolymer as it contains only one type of monomer unit.

(ii) melamine and formaldehyde

 

(iii) during vulcanization, sulphur is added to the rubber as it forms cross - links between polymers chains thereby imparting more tensile strength, elasiticity and resistance to abration.