1
JEE Main 2026 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The unsaturated ether on acidic hydrolysis produces carbonyl compounds as shown below :-

JEE Main 2026 (Online) 24th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 16 English 1

Based on this, predict the solution/reagent that will help to distinguish "P" and "Q" obtained in the following reaction :-

JEE Main 2026 (Online) 24th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 16 English 2
A

Saturated $\mathrm{NaHSO}_3$ solution

B

Fehling solution

C

Lucas reagent

D

2, 4 - DNP reagent

2
JEE Main 2026 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : Cross aldol condensation between two different aldehydes will always produce four different products.

Statement II : When semicarbazide reacts with a mixture of benzaldehyde and acetophenone under optimum pH , it forms a condensation product with acetophenone only.

In the light of the above statements, choose the correct answer from the options given below

A

Statement I is true but Statement II is false

B

Both Statement I and Statement II are false

C

Both Statement I and Statement II are true

D

Statement I is false but Statement II is true

3
JEE Main 2026 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

$$ \text { Consider the following two reactions } \mathrm{A} \text { and } \mathrm{B} \text {. } $$

JEE Main 2026 (Online) 24th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 15 English

Numerical value of [molar mass of $x+$ molar mass of $y$ ] is $\_\_\_\_$

A

46

B

160

C

88

D

4

4
JEE Main 2026 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A student is given one compound among the following compounds that gives positive test with Tollen's reagent.

JEE Main 2026 (Online) 24th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 17 English

The compound is :

A

B

B

D

C

A

D

C

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