निम्न क्रमबद्ध अभिक्रिया में उत्पाद [A] तथा [B] है
`CH_(3)CN overset (CH_(3)MgBr(2 " मोल ")) underset (H_(3)O^(+)) to [A] overset ("सान्द्र"H_(2)SO_(4)) to [B]`

Options

A. `CH_(3)COCH`

B. `(CH_(3)) _(3)COH,(CH_(3))_(2)C = CH_(2)`
C. `(CH_(3))_(2)CHOH , CH_(3)CH= CH_(2)`
D. `CH_(3)COCH_(3),CH_(3)CH = CH_(2)`

Answer

B

Explanation

`underset(" ऐसीटोनाइट्राइल ") (CH_(3)-C -= ) N +CH_(3)MgBr overset (" शुष्क ईथर ") to `
`CH_(3) - overset (CH_(3)) overset (|)C = N - MgEr overset ( H^(+),H_(2)O) underset (-NH_(3))to CH_(3) - overset (O) overset("||") C - CH_(3)`
`overset (CH_(3)MgBr) to CH_(3) - overset (CH_(3)) overset (|) underset (CH_(3)) underset(|)C -O- MgBr `
` overset (H_(3)O^(+)) to CH_(3) - overset (CH_(3)) overset(|) underset (CH_(3)) underset(|)C-OH `
`underset (-H_(2)O) overset (" "H_(2)SO_(4)) to CH_(3) - underset ((B)) underset (CH_(3)) underset(|) C =CH_(2)`