Benzoic acid reacts with $C a {(O H)}_{2}$ . The product obtained on dry distillation gives :

Benzophenone

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Acetophenone

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Benzaldehyde

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None of these

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Solution

The correct option is B Benzophenone
The reaction between Benzoic acid and $C a (O H)_{2}$ is

$C_{6} H_{5} C O O H + C a (O H)_{2} \to (C_{6} H_{5} C O O^{-})_{2} C a^{2 +} + H_{2} O$

On dry distillation it gives Benzophenone:

$(C_{6} H_{5} C O O^{-})_{2} C a^{2 +} \to C_{6} H_{5} - C O - C_{6} H_{5} + C a O + C O_{2}$

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F e C l_{3}

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