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Which of the following are correct?
(a) CH3 – O – CH+2 is more stable than CH3 – CH+2
(b) (CH3)2CH+ is less stable than CH3 – CH2 – CH+2
(c) CH2 = CH – CH+2 is more stable than CH3 – CH2 – CH+2
(d) CH2 = CH+ is more stable than CH3 – CH+2

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Order of priority of electronic effects in organic molecules: resonance>hyperconjugation>inductive effect So answer is both A and C in A CH3 – O – CH+2 has resonance with lone pair of oxygen while CH3 – CH+2 has hyperconjugation. in C CH2 = CH – CH+2 is more stable...
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Order of priority of electronic effects in organic molecules:

resonance>hyperconjugation>inductive effect

So answer is both A and C

in A 

CH3 – O – CH+2 has resonance with lone pair of oxygen while CH3 – CH+2 has hyperconjugation.

in C

CH2 = CH – CH+2 is more stable than CH3 – CH2 – CH+2, because CH2 = CH – CH+2 is resonance stabilised while CH3 – CH2 – CH+2 is  stabilised by hyperconjugation.

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I hv chemistry teacher qualified CSIR -UGC-NET & GATE with all India rank -6 with 5 years tec exp...

Allylic carbocation is more stable here ans is c
Comments

Chemical Engineering Gate AIR 150

A and C are correct
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