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There is a way to reduce benzene derivatives to the corresponding 4- cyclohexdiene known as Birch reduction . It involves treatment of aromatic substrate with two mole of active metal as Li or Na in liquid ammonia/alchol mixture. Mechanism : Find out correct product of the given reaction :

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For a typical nucleophilic aromatic substitution reaction to take place . 1. Nucleophilic atom should be of oxygen nitrogen or sulphur. 2. Leaving groups should be halide. 3. There should be strong electron withdrawing at ortho and para position to leaving group. Find out correct product of following reaction