Toluene (excess) undergoes the following sequence of reactions:
$(i)$ $CrO_2Cl_2, CS_2$
(ii) $H_3O^+$
(iii) $NaHSO_3$
After filtration,a residue $(A)$ is obtained. This residue $(A)$ reacts with $dil. \ HCl$ to form compound $(B)$.
Identify the structures of residue $(A)$ and compound $(B)$ respectively.

  • A
    Residue $(A)$: $C_6H_5CHO$,Compound $(B)$: $C_6H_5COOH$
  • B
    Residue $(A)$: $C_6H_5CH(OCrOHCl_2)_2$,Compound $(B)$: $C_6H_5CHO$
  • C
    Residue $(A)$: $C_6H_5CHO$,Compound $(B)$: $C_6H_5COONa$
  • D
    Residue $(A)$: $C_6H_5CH(OH)SO_3Na$,Compound $(B)$: $C_6H_5CHO$

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Similar Questions

$A$ in the given reaction is

Match the following reagents with the products obtained when they react with a ketone.
List-$I$List-$II$
$A. \ C_6H_5NHNH_2$$I. \ \text{Schiff base}$
$B. \ NH_2OH$$II. \ \text{Hydrazone}$
$C. \ C_6H_5NH_2$$III. \ \text{Oxime}$
$IV. \ \text{Phenyl hydrazone}$

Correct answer is:

Correct order of reactivity in nucleophilic addition reaction is:
$(i)$ Benzaldehyde
(ii) $p$-Methylbenzaldehyde
(iii) $p$-Nitrobenzaldehyde
(iv) Acetophenone

Which of the following reagents can react with both aldehydes and ketones?

Reagent $X$ in the given reaction is:
(Image shows cyclohexanone being converted to cyclohexanol with a deuterium atom attached to the same carbon as the hydroxyl group.)

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