(D) The Assertion is incorrect because benzaldehyde is less reactive than ethanol towards nucleophilic attack. This is due to the steric hindrance of

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

If both the Assertion and Reason are incorrect.

(D) The Assertion is incorrect because benzaldehyde is less reactive than ethanol towards nucleophilic attack. This is due to the steric hindrance of the bulky phenyl group and the resonance stabilization of the carbonyl carbon by the phenyl ring.The Reason is also incorrect because the $+R$ effect of the phenyl group is electron-donating,which increases the electron density on the carbonyl carbon,thereby reducing its electrophilicity.

Class 12 Chemistry 1 Aldehydes, Ketones and Carboxylic Acids: Aldehydes and Ketones Properties

Medium

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.

AIIMS 2014 All AIIMS

AIIMS 2015 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

1 Aldehydes, Ketones and Carboxylic Acids: Aldehydes and Ketones

Subtopic

Properties

Previous Year

AIIMS 2014 Paper All AIIMS years →

Previous Year

AIIMS 2015 Paper All AIIMS years →

Benzaldehyde on reaction with acetophenone in the presence of sodium hydroxide solution gives

Difficult

View Solution

What will be the major product?

Difficult

View Solution

In the following conversion,
$C_6H_5CN$ $\xrightarrow[(ii) H_3O^+]{(i) MeMgBr} X$ $\xrightarrow[H_3O^+]{NaOH/I_2} Y$
the major products $X$ and $Y$,respectively are

MediumKVPY 2011

View Solution

The same product $(A)$ is formed in both of the following reactions:
$1. PhMgBr + CH_3-CN \xrightarrow{H_3O^{+}} (A)$
$2. Ph-COOH \xrightarrow{(1) \text{ excess } CH_3Li, (2) H_3O^{+}} (A)$
Identify product $(A)$.

Medium

View Solution

Clemmensen reduction involves the conversion of $ >C=O $ to $ >CH_2 $ in the presence of:

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.

Similar Questions

Benzaldehyde on reaction with acetophenone in the presence of sodium hydroxide solution gives

What will be the major product?

In the following conversion,$C_6H_5CN$ $\xrightarrow[(ii) H_3O^+]{(i) MeMgBr} X$ $\xrightarrow[H_3O^+]{NaOH/I_2} Y$the major products $X$ and $Y$,respectively are

The same product $(A)$ is formed in both of the following reactions: $1. PhMgBr + CH_3-CN \xrightarrow{H_3O^{+}} (A)$ $2. Ph-COOH \xrightarrow{(1) \text{ excess } CH_3Li, (2) H_3O^{+}} (A)$ Identify product $(A)$.

Clemmensen reduction involves the conversion of $ >C=O $ to $ >CH_2 $ in the presence of:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.

In the following conversion,
$C_6H_5CN$ $\xrightarrow[(ii) H_3O^+]{(i) MeMgBr} X$ $\xrightarrow[H_3O^+]{NaOH/I_2} Y$
the major products $X$ and $Y$,respectively are

The same product $(A)$ is formed in both of the following reactions:
$1. PhMgBr + CH_3-CN \xrightarrow{H_3O^{+}} (A)$
$2. Ph-COOH \xrightarrow{(1) \text{ excess } CH_3Li, (2) H_3O^{+}} (A)$
Identify product $(A)$.