Which of the following is not a suitable initiator for free radical addition polymerisation reaction?

Acetyl peroxide

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Benzoyl peroxide

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tert-Butyl peroxide

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Benzoquinone

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Solution

The correct option is D Benzoquinone
Benzoquinone combines with the free radical intermediate to form a highly stable, non-reactive radical because of resonance. This inhibits the further progress of the chain growth and therefore, the reaction stops. Peroxides are very important free radical generating initiators.

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