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Benzaldeyde can be prepared by oxidation...

Benzaldeyde can be prepared by oxidation of toluene by

A

Acidic `KMnO_4`

B

`K_2Cr_2O_7 // H^(+)`

C

`CrO_2Cl_2`

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
C

This is Etard’s reaction. Acidic `KMnO_4` and `K_2Cr_2O_7` oxidise toluene to benzoic acid but `CrO_2Cl_2` oxidises it to Benzaldehyde.
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Knowledge Check

  • Benzaldehyde can be prepared by oxidation of toluene by

    A
    Acidic `KMnO_(4)`
    B
    `K_(2)Cr_(2)O_(7)//H^(+)`
    C
    `CrO_(2)Cl_(2)`
    D
    All of these

  • In Etard's reaction, Benzaldehyde can be prepared by oxidation of toluene by

    A
    Acidic `KMnO_(4)`
    B
    `K_(2)Cr_(2)O_(7)`
    C
    `CrO_(2)Cl_(2)`
    D
    All.

  • Banzaldehyde can be prepared by oxidation of toluene by

    A
    Acidic `KMnO_(4)`
    B
    `K_(2) Cr_(2) O_(7)`
    C
    `CrO_(2) Cl_(2)`
    D
    All of these