MCQEasyJEE Main 2024 · 4 April, Shift 2Aldehydes & Ketones

Chemistry Question from JEE Main 2024 · 4 April, Shift 2

In the given reactions, identify the reagent A and reagent B:

C6H5CH3   273283K  A+(CH3CO)2O   [Intermediate]   H3O+   C6H5CHO\mathrm{C_6H_5{-}CH_3} \;\xrightarrow[\ 273-283\,\mathrm{K}\ ]{\ \text{\textbf{A}} + (\mathrm{CH_3CO})_2\mathrm{O}\ }\; [\text{Intermediate}] \;\xrightarrow{\ \mathrm{H_3O^+}\ }\; \mathrm{C_6H_5{-}CHO} C6H5CH3   CS2  B   [Intermediate]   H3O+   C6H5CHO\mathrm{C_6H_5{-}CH_3} \;\xrightarrow[\ \mathrm{CS_2}\ ]{\ \text{\textbf{B}}\ }\; [\text{Intermediate}] \;\xrightarrow{\ \mathrm{H_3O^+}\ }\; \mathrm{C_6H_5{-}CHO}
  • A

    A-CrO₃, B-CrO₃

  • B

    A-CrO₃, B-CrO₂Cl₂

  • C

    A-CrO₂Cl₂, B-CrO₂Cl₂

  • D

    A-CrO₂Cl₂, B-CrO₃

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