question_answer

Which one of the following is a chain growth polymer?

A)  Starch          

B)  Nucleic acid

C)  Polystyrene     

D)  Protein

Correct Answer: C

Solution :

 Chain growth polymerisation requires an initiator (such as organic peroxides) to produce a free radical to which the monomers are added in a chain fashion. Initiators are added in a very small quantities and are decomposed    by    heat,    light    or oxidation-reduction reaction to produce reactive species, eg, free radical. Polystyrene is an example of chain growth polymer because in it styrene molecules are associated in the form of monomer.