Q.

An organic compound ‘X’ with the molecular formula C3H6O, reacts with CH3MgBr and then hydrolyzed to give ‘Y’. Y gives turbidity immediately with Lucas reagent. Structural formula of compounds X and Y are :

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a

    X                               Y
CH3CH2CHO           (CH3)3COH

b

     X                               Y
CH3CH2CHO           CH3CH2CH(OH)CH3  

c

  X                                 Y
CH3COCH3           CH3CH2CH(OH)CH3

d

    X                                Y
CH3COCH3             (CH3)3COH

answer is B.

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Detailed Solution

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X is CH3COCH3 which when react with Grignard reagent, forms Y (tertiary alcohol) that instantly shows turbidity with Lucas reagent.

CH3COCH3X+CH3MgBrCH3-CH(OH)-CH3Y

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