Which of the following monomers cannot undergo chain growth polymeriza

1.	Which of the following monomers cannot undergo chain growth polymerization?
A.	CH<sub>2</sub>‚Äö√Ñ√∂‚àö√ò‚àö‚Ñ¢ CH<sub>2</sub>
B.	CH<sub>2</sub>‚Äö√Ñ√∂‚àö√ò‚àö‚Ñ¢CHCN
C.	CH<sub>2</sub>‚Äö√Ñ√∂‚àö√ò‚àö‚Ñ¢CHCOOR
D.	COOH‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â†CH<sub>2</sub>‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â†COOH
Answer» E.

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