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Stability of pi-bond in following alkene...

Stability of `pi`-bond in following alkenes in the increasing order is :
`underset("(I)")CH_(3)-CH=CH-CH_(3)" "underset("(II)")(CH_(3)-underset(CH_(3))underset(|)C=underset(CH_(3))underset(|)C-CH_(3))" "underset("(III)")(CH_(3)-underset(CH_(3))underset(|)C=CH_(2))"`
`underset("(IV)")(CH_(3)-underset(CH_(3))underset(|)C=CH-CH_(3))`

A

`IltIIIltIVltII`

B

`IltIIltIIIltIV`

C

`IVltIIIltIIltI`

D

`IIltIIIltIVltI`

Text Solution

Verified by Experts

The correct Answer is:
A
Stability `prop` Number of hyperconjugative H-atoms.
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Knowledge Check

  • IUPAC name of CH_(3)-underset(CH_(3))underset(|)C=CH-underset(O)underset(||)C-CH_(3) is

    A
    4-methylpent-3-en-2-one
    B
    2-Methylpent-3-en-2-one
    C
    3-Methylpent-2-en-1-one
    D
    none of these.

  • IUPAC name of CH_(3)-underset(CH_(3))underset(|)C=CH-underset(O)underset(||)C-CH_(3) is

    A
    4-methylpent-3-en-2-one
    B
    2-Methylpent-3-en-2-one
    C
    3-Methylpent-2-en-1-one
    D
    none of these.

  • IUPAC name of CH_(3)-underset(CH_(3))underset(|)C=CH-underset(O)underset(||)C-CH_(3) is

    A
    4-methylpent-3-en-2-one
    B
    2-Methylpent-3-en-2-one
    C
    3-Methylpent-2-en-1-one
    D
    none of these.
    • RESONANCE ENGLISH-GENERAL ORGANIC CHEMISTRY-I-PRACTICE TEST-1
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    2. Select the correct statement regarding the following compounds :

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    6. The decreasing order of electron density on the ring is :

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    7. Hyperconjugation observed in

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    9. In the following sets of resonating structure, lable the major contrib...

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    14. Resonance stabilized cation is:

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    19. would be :

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