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Which outcome occurs during the propagation step of molecular chain polymerization?

A)Addition of monomers to growing chain
B)Termination reactions yielding stable polymer
C)Initiator radicals quench active centres
D)Heat dissipation exceeds cooling capacity

💡 Explanation

Monomers sequentially add to a reactive chain end through chain growth polymerization, because the active site extends, therefore resulting in chain elongation rather than termination or initiation, the mechanism being radical addition.

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