Which from following compounds is obtained when toluene is treated with CrO_2Cl_2 in presence of CS_2 followed by acid hydrolysis?

MHT CET 2023 Chemistry question

Which from following compounds is obtained when toluene is treated with in presence of followed by acid hydrolysis?

(A)Chlorobenzene
(B)Benzal chloride
(C)BenzaldehydeCorrect
(D)Benzoic acid

Answer: (C)

Solution

Toluene on treatment with chromyl chloride in gives a brown chromium complex, , which on acid hydrolysis gives benzaldehyde: C_6H_5CH_3\xrightarrow[CS_2]{CrO_2Cl_2}\xrightarrow{H_3O^+}$

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Question ID VK-097879