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Question Paper from: IIT JEE Main 2021 TestSeries Paper 2

Arrange the following carbocation in the increasing order of stability

iv < iii < ii < i

i < ii < iii < iv

iii < i < ii < iv

ii < iii < iv < i

Solution:

Chapter Name: Reaction Mechanism

Difficulty Level: Moderate

Carbocation stability $\propto n o o f α$ hydrogen

I $\to 3 α$ -hydrogen

II, III, IV $\to n o α - h y d ro g e n$

Carbocation stability $\propto$ Resonance

But III & IV have no resonance

I > II > III > IV

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IIT JEE Main 2021 TestSeries Paper 2

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