When benzene is treated with carbon monoxide and hydrogen chloride in the presence of anhydrous aluminium chloride, it gives
A
Benzoic acid
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B
Benzaldehyde
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C
Benzoyl chloride
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D
Phenol
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Solution
The correct option is B Benzaldehyde When benzene is treated with carbon monoxide and hydrogen chloride in the presence of anhydrous aluminium chloride, it gives benzaldehyde. This is Gatterman- Koch reaction.