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Question:

Which of the following statements is not true?

Chain growth polymerisation includes both homopolymerisation and copolymerisation

Step growth polymerisation requires a bifunctional monomer

Nylon6is an example of step-growth polymerisation

Chain growth polymerisation involves homopolymerisation only

Solution:

Chain growth polymerisation (or addition polymerisation) involves homopolymerisation only. Examples of such polymers include polythene, orlon and Teflon. Thus the statement in option D is not true. Hence, the correct option is D