JEE Main · 2019 · 10 Apr 2019 · Shift 1 · Aldehydes Ketones and Carboxylic Acids

Major products of the following reaction are:

(A) $CH_{3} OH$ and $HCO_{2} H$
(B)HCOOH and (see structure)
(C)(see structure)
A
B
✓ Correct
(D) $CH_{3} OH$ and COOH

Answer: (C)

Solution

This is a crossed Cannizzaro reaction between benzaldehyde and formaldehyde under strong base. Formaldehyde, lacking an

α

-hydrogen and being the more reactive, is oxidised to formic acid, while benzaldehyde is reduced. The products are benzyl alcohol and formic acid.

JEE Main · 2019 · 10 Apr 2019 · Shift 1 · Single correct option

Practise more: all JEE Main PYQs on Aldehydes Ketones and Carboxylic Acids →

More JEE Main questions on Aldehydes Ketones and Carboxylic Acids

An organic compound "P" of molecular formula $C_{6} H_{12} O_{3}$ gives positive iodoform test but negative Tollen's test. When "P" is treated with dilute acid, it produces "Q". "Q" gives positive Tollen's test and also iodoform test. The structure of …
JEE Main 2026View solution →
Match List-I with List-II.

List-I (Reaction Name - Involving aldehydes):
I. Etard Reaction
II. Rosenmund Reduction
III. Gatterman-Koch Reaction
IV. Stephen Reaction

List-II (Reagents):
A. $H_{2}$ , Pd- $BaSO_{4}$
B. $SnCl_{2}$ , HCl
C. …
JEE Main 2026View solution →
The compound A, $C_{8} H_{8} O_{2}$ reacts with acetophenone to form a single product via cross-Aldol condensation. The compound A on reaction with conc. NaOH forms a substituted benzyl alcohol as
JEE Main 2026View solution →
' $x$ ' is the product which is obtained from propanenitrile and stannous chloride in the presence of hydrochloric acid followed by hydrolysis. ' y ' is the product which is obtained from the but-2-ene by the ozonolysis followed by hydrolysis. From the following, which product is …
JEE Main 2026View solution →
From the given following (A to D) cyclic structures, those which will not react with Tollen's reagent are :
JEE Main 2026View solution →
Iodoform test can differentiate between
A. Methanol and Ethanol
B. $CH_{3} COOH$ and $CH_{3} CH_{2} COOH$
C. Cyclohexene and cyclohexanone
D. Diethyl ether and Pentan-3-one
E. Anisole and acetone

Choose the correct answer from the …
JEE Main 2026View solution →