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Which of the following is least stable c...

Which of the following is least stable carbonium ion ?

A

`overset(+)CH_(3)`

B

`CH_(3)-overset(+)CH-CH_(3)`

C

`CH_(3)-overset(+)CH_(2)`

D

`CH_(2)-overset(+)underset(CH_(3))underset(|)C-CH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`A" "1^(@)` carbocation is least stable.
`underset(A" "1^(@)"carbocation")underset()(overset(+)CH_(3))`
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DINESH PUBLICATION-BASIC PRINCIPLES OF ORGANIC CHEMISTRY-REVISION QUESTIONS FROM COMPETITIVE EXAMS.
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  2. Which of the following is the active species in the nitration of aroma...

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  3. Which of the following is least stable carbonium ion ?

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  4. Which of the following behaves both as a nucleophile and as an electro...

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  5. Intermediate involved in Reimer-Tiemann reaction is

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  6. Among the following alkenes: {:(1-"Butene,",cis-2-"Butene",,"trans"-...

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  7. Most stable carbanion among the following is

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  8. The addition of HCN to carbonyl compounds is an example of

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  9. For the reaction of phenol with CHCl(3) in presence of KOH, the electr...

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  10. Nucleophilicity order is correctly represented by

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  11. In which of the following homolytic bond fission takes place ?

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  12. Polarization of electrons in acrolein may be written as:

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  13. Select the most stable carbocation from amongst the following

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  14. Which of the following is not a nucleophile ?

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  16. Consider the following carbocations (I)C(6)H(5)overset(+)CH(2) , (II...

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  19. In the mechanism of Hoffmann reaction which intermediate rearranges to...

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