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Which of the following statements is/are...

Which of the following statements is/are wrong about pericyclic reaction ?

A

(a) It is intramolecular cyclisation of acyclic compound.

B

(b) It is intermolecular cyclisation of acyclic compound.

C

(c) It proceeds via coincerted mechanism in which breaking and formation of bonds take place simultaneously.

D

(d) It proceed via free-radical mechanism.

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The correct Answer is:
B, D
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