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JEE Main levelSingle correct optionDifficulty 2 of 3nc132

Benzenediazonium chloride is treated with $HBF X_{4}$ and the precipitate of benzenediazonium tetrafluoroborate is filtered and heated. The organic product is

Afluorobenzene
Bchlorobenzene
Cphenol
Dbenzene

Answer: A

This is the Balz-Schiemann reaction. Thermal decomposition of

C X_{6} H X_{5} N X_{2} X^{+} BF X_{4} X^{-}

gives

C X_{6} H X_{5} F

,

BF X_{3}

and

N X_{2}

. Fluorobenzene is the organic product.

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