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Q.

Statement-I : Conversion of aldol (3-hydroxybutanal) to crotonaldehyde involves E1cb mechanism
Statement-II : Reactivity towards dehydro halogenation through E2 mechanism follows the order
(CH3)3CBr>(CH3)2CHBr>CH3CH2Br

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a

Statement I and II are correct

b

Statement I and II are incorrect

c

Statement I is incorrect and statement II is correct

d

Statement I is correct and statement II is incorrect

answer is B.

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Detailed Solution

I) Question Image
II) E2 mechanism involves
Alkene like T.S…30RX>20RX>10RX

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Statement-I : Conversion of aldol (3-hydroxybutanal) to crotonaldehyde involves E1cb mechanismStatement-II : Reactivity towards dehydro halogenation through E2 mechanism follows the order(CH3)3CBr>(CH3)2CHBr>CH3CH2Br