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Oxidation of alkenes by cleavage with ac...

Oxidation of alkenes by cleavage with acidic or alkaline `KMnO_4` or acidic `K_2Cr_2O_7` at higher temperature yields products depending upon the nature of alkene. A hot solution of is a strong oxidizing agent which gives only ketones and carboxylic acids and not aldehydes (as they cannot be isolated)

Which of these compounds on oxidation with hot KMnOą gives only butanoic acid?

A

Oct-3-ene

B

Oct-4-ene

C

Oct-2-ene

D

3-methylhept-3-ene

Text Solution

Verified by Experts

The correct Answer is:
B
Oct-4-ene
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Knowledge Check

  • Oxidation of alkenes by cleavage with acidic or alkaline KMnO_4 or acidic K_2Cr_2O_7 at higher temperature yields products depending upon the nature of alkene. A hot solution of is a strong oxidizing agent which gives only ketones and carboxylic acids and not aldehydes (as they cannot be isolated) Which of the these compounds on treatment with OsO_4 followed by Na_2SO_3 will give Cis-2-methyl butane-2,3-diol?

    A
    2-Methyl-2-butene
    B
    4-methyl-2-pentene
    C
    2,3-Dimethyl-2-butene
    D
    2,2-Dimethyl-2-butene

  • Which of the following on oxidation give acetic acid only

    A
    `CH_3 CH_2 CH_2 CHO`
    B
    `CH_3 COCH_2 CH_3`
    C
    `CH_3 COCH_2 CH_2 CH_3`
    D

  • Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behvaviour ?

    A
    `Cu+2H_(2)SO_(4) to CuSO_(4)+SO_(2)+2H_(2)O`
    B
    `3S+2H_(2)SO_(4) to SO_(2)+2H_(2)O`
    C
    `C+2H_(2)SO_(4) to CO_(2)+2SO_(2)+2H_(2)O`
    D
    `CaF_(2)+H_(2)SO_(4) to CaSO_(4)+2HF`

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