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JEE Main 2025 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Aman has been asked to synthesise the molecule JEE Main 2025 (Online) 24th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 5 English He thought of preparing the molecule using an aldol condensation reaction. He found a few cyclic alkenes in his laboratory. He thought of performing ozonolysis reaction on alkene to produce a dicarbonyl compound followed by aldol reaction to prepare " $x$ ". Predict the suitable alkene that can lead to the formation of " $x$ ".

A
JEE Main 2025 (Online) 24th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 5 English Option 1
B
JEE Main 2025 (Online) 24th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 5 English Option 2
C
JEE Main 2025 (Online) 24th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 5 English Option 3
D
JEE Main 2025 (Online) 24th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 5 English Option 4
2
JEE Main 2025 (Online) 23rd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Given below are two statements:

Consider the following reaction

JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 7 English 1

Statement (I): In the case of formaldehyde JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 7 English 2 is about 2280, due to small substituents, hydration is faster.

Statement (II) : In the case of trichloro acetaldehyde JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 7 English 3 is about 2000 due to $-$I effect of $-$Cl .

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 true
C
Statement I is false but Statement II is true
D
Both Statement I and Statement II are false
3
JEE Main 2025 (Online) 23rd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
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The major product of the following reaction is: $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{O} \xrightarrow[\text { reflux }]{\substack{\text { excess } \mathrm{HCHO} \\ \text { alkali }}}$ ?

A
JEE Main 2025 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Option 1
B
$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{OH}$
C
JEE Main 2025 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Option 3
D
JEE Main 2025 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Option 4
4
JEE Main 2025 (Online) 22nd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
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JEE Main 2025 (Online) 22nd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 10 English

Residue (A) + HCl (dil) $\rightarrow$ Compound (B)

Structure of residue (A) and compound (B) formed respectively is :

A
JEE Main 2025 (Online) 22nd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 10 English Option 1
B
JEE Main 2025 (Online) 22nd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 10 English Option 2
C
JEE Main 2025 (Online) 22nd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 10 English Option 3
D
JEE Main 2025 (Online) 22nd January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 10 English Option 4
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