JEE Main 2015 · 11 Apr · Shift 1 · Chemistry Q55

ChemistrySingle correct+4 / -1Question 55 of 90

In the reaction sequence
$\ce{2CH3CHO ->[OH^-] A ->[\Delta] B}$
; the product B is :

\ce{CH3-CH2-CH2-CH2-OH}

\ce{CH3-CH=CH-CHO}

\ce{CH3-CO-CH3}

\ce{CH3-CH2-CH2-CH3}

Answer and worked solution

Official answer: B

The aldol, $\ce{CH3CH(OH)CH2CHO}$ (A), dehydrates on heating to crotonaldehyde, $\ce{CH3CH=CHCHO}$ (B).

JEE Main 2015 · 11 Apr · Shift 1, Chemistry question 55