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1
JEE Main 2026 (Online) 23rd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

$$ \text { Compound ' } \mathrm{P} \text { ' undergoes the following sequence of reactions : } $$

JEE Main 2026 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 21 English

$$ ' \mathrm{P}^{\prime} \text { is : } $$

A
JEE Main 2026 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 21 English Option 1
B
JEE Main 2026 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 21 English Option 2
C
JEE Main 2026 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 21 English Option 3
D
JEE Main 2026 (Online) 23rd January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 21 English Option 4
2
JEE Main 2026 (Online) 22nd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The compound $\mathrm{A}, \mathrm{C}_8 \mathrm{H}_8 \mathrm{O}_2$ 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 one of the two products. The compound A is :

A

2-hydroxy acetophenone

B

4-hydroxy benzylaldehyde

C

4-methyl benzoic acid

D

4-methoxy benzaldehyde

3
JEE Main 2026 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

$$ \text { Match the LIST-I with LIST-II } $$

List-I Reagents List-II Name of Reaction involving carbonyl compounds
A. 
<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>2</mn>
− 
<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>2</mn>
, 
<mi data-mjx-auto-op="false">KOH</mi>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>2</mn>
− 
<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>2</mn>
, 
<mi data-mjx-auto-op="false">KOH</mi>
NH_(2)-NH_(2),KOH		 I. Tollen's Test
B. 
<mi data-mjx-auto-op="false">Ag</mi>

<mrow data-mjx-texclass="INNER">

  <mo data-mjx-texclass="OPEN">(</mo>

  <msub>

    <mrow data-mjx-texclass="ORD">

      <mi data-mjx-auto-op="false">NH</mi>

    </mrow>

    <mn>3</mn>

  </msub>

  <mo data-mjx-texclass="CLOSE">)</mo>

</mrow>

<mn>2</mn>

<mi data-mjx-auto-op="false">OH</mi>

<mi data-mjx-auto-op="false">Ag</mi>

<mfenced open="(" branch_open="(" close=")" branch_close=")" separators="|">

  <mrow>

    <msub>

      <mrow data-mjx-texclass="ORD">

        <mi data-mjx-auto-op="false">NH</mi>

      </mrow>

      <mn>3</mn>

    </msub>    

  </mrow>    

</mfenced>

<mn>2</mn>

<mi data-mjx-auto-op="false">OH</mi>
Ag(NH_(3))_(2)OH		 II. Clemmensen Reduction
C. Aq. 
<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">CuSO</mi>

</mrow>

<mn>4</mn>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">CuSO</mi>

</mrow>

<mn>4</mn>
CuSO_(4), Sodium Potassium tartarate, KOH		 III. Wolff - Kishner Reduction
D. 
<mi data-mjx-auto-op="false">Zn</mi>
− 
<mi data-mjx-auto-op="false">Hg</mi>
, 
<mi data-mjx-auto-op="false">HCl</mi>

<mi data-mjx-auto-op="false">Zn</mi>
− 
<mi data-mjx-auto-op="false">Hg</mi>
, 
<mi data-mjx-auto-op="false">HCl</mi>
Zn-Hg,HCl		 IV. Fehling's Test

Choose the correct answer from the options given below :

A

A-IV, B-III, C-II, D-I

B

A-III, B-I, C-IV, D-II

C

A-II, B-I, C-IV, D-III

D

A-III, B-IV, C-I, D-II

4
JEE Main 2026 (Online) 21st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List - I with List - II.

List – I
Reagents		 List – II
Reaction Name (Involving aldehydes)
A.  H2, Pd–BaSO4
B.  SnCl2, HCl
C.  CrO2Cl2, CS2
D.  CO, HCl, Anhyd. AlCl3 		I.  Etard Reaction
II.  Rosenmund Reduction
III.  Gattermann–Koch Reaction
IV.  Stephen Reaction

Choose the correct answer from the options given below :

A
A-II, B-III, C-IV, D-I
B
A-IV, B-III, C-I, D-II
C
A-IV, B-I, C-II, D-III
D
A-II, B-IV, C-I, D-III
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