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Consider the following structure {:(un...

Consider the following structure
`{:(underset("I")(CH_(2)C=overset(+)CH)" , "underset("II")(CH_(3)-overset(+)CH_(2))),(underset("III")(H_(2)C=CH-overset(+)CH_(2))" , "underset("IV")(C_(6)H_(5)-overset(+)CH-C_(6)H_(5))):}`
The correct sequence of these carbocations in the decreasing order of their stability is :

A

`I, II,III,IV`

B

`IV,III,II,I`

C

`IV,II,III,I`

D

`I,III,II,IV`

Text Solution

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The correct Answer is:
B
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OP TANDON-BASIC PRINCIPLES OF ORGANIC COMPOUNDS (MECHANISM OF ORGANIC REACTIONS)-OBJECTIVE QUESTIONS (Level-A)
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  2. Nitration of benzene is:

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  3. Consider the following structure {:(underset("I")(CH(2)C=overset(+)C...

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  4. Addition of HI on the double bond of propene yields isopropyl iodide a...

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  5. Which of the following alkyl halides is hydrolysed by S(N^(1)) mechani...

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

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  7. Which is dehydrated to maximum extent using conc. H(2)SO(4)?

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  8. Which one of the following statements wrong about S(N^(2)) reaction?

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  9. Which of the following statements is not correct for a nucleophiles?

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  10. The addition of HBr to propylene takes place opposite to Markownikoff'...

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  11. Anti-Markownikoff's addition is not observed in:

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  12. Ammonia is iso-structural with:

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  13. Which of the following statements is correct?

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  14. Which of the following statements is correct about a carbocation?

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  15. S(N^(1)) mechanism for the hydrolysis of an alkyl halide involves the ...

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  16. Stability of overset(+)CH(2)-CH=CH(2) can be explained by:

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  17. Nucleophilic part of the reagent attacks the substrate CH(3)CH(2)COCH(...

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  18. Which of the following is electron deficient ?

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  19. Hyperconjugation is most useful for stabilizing which of the following...

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  20. Arrange the following in order of decreasing tendency towards S(N^(2))...

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