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Two isomeric compound 'A' and 'B' have t...

Two isomeric compound 'A' and 'B' have the formula `C_(3)H_(6)Cl_(2)`. With aq KOH solution'A' gives propionaldehyde and 'B' gives acetone. Than 'A' and 'B' are

A

`CH_(3)-C Cl_(2)-CH_(3)` and `CH_(3)-CH_(2)-CHCl_(2)`

B

`CH_(3)-CHCl-CHCl_(2)` and `CH_(3)-CH_(2)-CHCl_(2)`

C

`CH_(3)-CH_(2)-CHCl_(2)` and `CH_(3)- C Cl_(2)-CH_(3)`

D

`CH_(3)-CHCl-CHCl_(2)` and `CH_(3)-C Cl_(2)-CH_(3)`

Text Solution

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The correct Answer is:
3
Terminal geminal dihalides gives aldehydes and that of other geminal dihalides gives ketones with aq. KOH A)
B) `C-overset(CI)overset(|)underset(CI)underset(|)C-C`
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Knowledge Check

  • Two isomeric compounds A and B have the formula C_3H_6CI_2 . With aq. KOH solution A gives propionaldehyde and B gives acetone. Then A and B respectively are

    A
    `CH_3 - "CCl"_2 - CH_3` and `CH_3 - CH_2 - CHCl_2`
    B
    `CH_3 - CHCl - CHCl_2` and `CH_3 - CH_2 - CHCl_2`
    C
    `CH_3 - CH_2 - CHCl_2` and `CH_3 - "CCl"_2 - CH_3`
    D
    `CH_3 - CHCl - CHCl_2` and `CH_3 - "CCl"_2 - CH_3`

  • When H_(2) is added to two isomeric alkenes A and B having molecular formula C_(5)H_(9)Cl , A gives optically inactive compound while B gives a chiral compound. The two isomers are

    A
    A is 3-chloro pent-1-ene and B is 4-chloro pent- 2-ene
    B
    A is 4-chloro pent-1-ene and B is 2-chloro pent 2-ene
    C
    A is 1-chloro pent-1-ene and B is 1-chloro pent-2-ene
    D
    A is 1-chloro pent-1-ene and B is 5-chloro pent-1-ene

  • Two isomeric halo alkenes A and B have molecular formula C_(5)H_(9)Cl . A gives optically inactive compound while B gives optically active compound in hydrogenation. The two isomers respectively are

    A
    3 - chloro -2- pentene and 1 - chloro -2- pentene
    B
    4 - chloro -1- pentene and 2 - chloro -2- pentene
    C
    3 - chloro -1- pentene and 4 - chloro -2- pentene
    D
    1 - chloro -1- pentene and 5 - chloro -1- pentene
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