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Order of stability of the carbocations: ...

Order of stability of the carbocations: `ph_(2)overset(oplus)(C)CH_(2)Me(I), " " phCH_(2)CH_(2)overset(oplus)(C)Hph(II), " " ph_(2)CHoverset(oplus)(C)HMe(III)and ph_(2)C(Me)overset(oplus)(C)H_(2)(IV)` is-

A

`(IV)gt(II)gt(I)gt(III)`

B

`(I)gt(II)gt(III)gt(IV)`

C

`(II)gt(I)gt(IV)gt(III)`

D

`(I)gt(IV)gt(III)gt(II)`

Text Solution

Verified by Experts

The correct Answer is:
B
The order of stability of carbocations is : tertiary benzyl `(I)gt"secondary benzyl"(II)gt"secondary alkyl"(III)gt"primary alkyl"(IV)`.
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CHHAYA PUBLICATION-ORGANIC CHEMISTRY : BASIC PRINCIPLES AND TECHNIQUES -ENTRANCE QUESTION BANK
  1. Which one of the following characteristics belongs to an electrophile-

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  2. The most stabl enol tautomer of MeCOCH(2)CO(2) Et is-

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  3. Order of stability of the carbocations: ph(2)overset(oplus)(C)CH(2)Me(...

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  4. MeCH(2)CH=CH(2) is stable than Me(2)C=CH(2)because-

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  5. (+) and (-) - Lactic acid have the same molecular formula, C(3)H(6)O(3...

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  6. Which of the following statement is correct for 2 - butene-

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  7. Basicity of aniline is less than methyl amine, because-

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  8. Tautomerism is exhibited by-

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  9. Amongst the following, the one which can exist in free state as a stab...

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  10. Correct pair of compounds which gives blue colouration/ precipitate an...

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  11. The IUPAC name of the compound X is-

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  12. The optically active molecule is-

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  13. (+) - 2 - chloro - 2 - phenylethane in toluene racemises slowly in the...

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  14. The order of decreasing ease of abstraction of hydrogen atoms in the f...

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  15. The most likely protonation site in the given molecule is-

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  16. The 4 - th higher homologue of ethane is-

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  17. Among the following structures the one which is not a resonating struc...

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  18. The correct order of decreasing length of the bond as indicated by the...

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  19. IUPAC name of the molecule, is-

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  20. The correct statement regarding the given compound is-

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