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The order of stability of the alkenes ...

The order of stability of the alkenes
`underset(I)(R_(2)C=CR_(2)') underset(II)(R_(2)C=CHE) underset(III)(R_(2)C=CH_(2)')underset(IV)(RCH=CHR,) "and" underset(V)(RCH=CH_(2))`
is -

A

I gt II gt III gt IV gt V

B

I = II gt III gt IV gt V

C

II gt I gt IV gt III gt V

D

V gt IV gt III gt II gt I

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The correct Answer is:
A
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The decreasing order of stability of the following cations is underset(I)(CH_(3)overset(+)(C)H_(2)) , underset(II)(H_(2)C=overset(+)(C)H) , underset(III)(H-C-=overset(+)(C)) , underset(IV)(H_(3)C-overset(+)(C)=0)

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Arrange the following alkenes in the decreasing order of stability: (I) underset(CH_(3)C=CHCH_(3))underset(|)(CH_(3)) (II) underset(CH_(3)CHCH=CH_(2))underset(|)(CH_(3)) (III) underset(CH_(2)=CHCH_(2)CH_(3))underset(|)(CH_(3))

The bond dissociation energies of the following underset(I)(CH_(3)-H) underset(II)(CH_(3)CH_(2)-H) underset(III)(CH_(2)=CH-CH_(2)-H) underset(IV)(C_(6)H_(5)-H) vary in the order :

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Arrange the following carbanions in decreasing order of stability: underset((I))(.^(Theta)(CH_(2))-Cl) , underset((II))(.^(Theta)(CH_(2))-CN) , underset((III))(.^(Theta)(CH_(2))-NO_(2)) , underset((IV))(.^(Theta)CH_(2)-CH_(3))

NTA MOCK TESTS-NTA NEET SET 28-CHEMISTRY
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