1
JEE Main 2026 (Online) 5th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements:

Statement I: The condensation reaction between $\mathrm{CH_3-CH=O}$ and JEE Main 2026 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 3 English 1
under optimum pH will produce JEE Main 2026 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 3 English 2

Statement II: The molecule, JEE Main 2026 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 3 English 3 will generate $\mathrm{Ph-CH=O}$ in the presence of dilute acid.

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

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

2
JEE Main 2026 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2026 (Online) 4th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 2 English

Compound $(\mathrm{X})$ is subjected to the sequence of reactions as shown above. Molar mass of the major product $(\mathrm{Y})$ formed is $\_\_\_\_$ $\mathrm{g} \mathrm{mol}^{-1}$.

(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{C}: 12, \mathrm{H}: 1, \mathrm{O}: 16$ )

A

90

B

118

C

160

D

125

3
JEE Main 2026 (Online) 2nd April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

An organic compound “x” where molar ratio of C, O and H are equal, on treatment with 50% KOH under reflux followed by acidification produced “y”. The most likely structure of “y” is:

[Molar mass of ‘x’ is 58 g mol−1]

A
JEE Main 2026 (Online) 2nd April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 12 English Option 1
B
$$ \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{O} $$
C
JEE Main 2026 (Online) 2nd April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 12 English Option 3
D
JEE Main 2026 (Online) 2nd April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 12 English Option 4
4
JEE Main 2026 (Online) 2nd April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A molecule (X) with following structure under mild acidic condition is hydrolysed to produce (Y) and (Z). Identify the correct statements about (Y) and (Z).

JEE Main 2026 (Online) 2nd April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 11 English

A. Both (Y) and (Z) have same molar mass.

B. (Y) and (Z) can be distinguished from each other by NaHCO$_3$.

C. (Y) and (Z) react with HCN with same rates.

D. (Y) and (Z) undergo addition reaction with 2,4-DNP.

Choose the correct answer from the options given below :

A

A, B and C Only

B

B and C Only

C

C and D Only

D

A and D Only

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