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Toluene with chromyl chloride, then hydrolysis: product (Etard reaction)

The same question, asked 5 times: 4 May 2023 S2, 13 May 2024 S2*, 14 May 2024 S1*, 19 Apr 2025 S1*, 17 Apr 2026 S2. Every wording below, oldest first.

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  1. Question 1

    4 May 2023 S2

    66
    Identify the product 'B' in the following reaction. Toluene →CrO2Cl2/CS2A→H3O+B\xrightarrow{\text{CrO}_2\text{Cl}_2/\text{CS}_2} A \xrightarrow{H_3O^+} B

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  2. Question 2

    13 May 2024 S2

    62
    Which from following compounds is obtained when toluene is treated with CrO2Cl2\text{CrO}_2\text{Cl}_2 in presence of CS2\text{CS}_2 followed by acid hydrolysis?

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  3. Question 3

    14 May 2024 S1

    81
    Identify the product 'B' in the following reaction. Toluene →Chromyl chloride, CS2→H3O+\xrightarrow{\text{Chromyl chloride, CS}_2}\xrightarrow{\text{H}_3\text{O}^+} B

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  4. Question 4

    19 Apr 2025 S1

    56
    Identify the compound formed by action of chromyl chloride on toluene in presence of CS2CS_{2} and hydrolysed further?

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  5. Question 5

    17 Apr 2026 S2

    17
    Identify the product 'B' in the following reaction Toluene →Chromyl chloride/CS2A→H3O+B\xrightarrow{\text{Chromyl chloride}/\mathrm{CS_2}} A \xrightarrow{\mathrm{H_3O^+}} B

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