1
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

2
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

3
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
4
JEE Main 2026 (Online) 21st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Statement I : Compound (X), shown below, dissolves in NaHCO3 solution and has two chiral carbon atoms
JEE Main 2026 (Online) 21st January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 33 English 1

Statement II : Compound (Y), shown below, has two carbons with sp3 hybridization, one carbon with sp2 and one carbon with sp hybridization
JEE Main 2026 (Online) 21st January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 33 English 2

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

Both Statement I and Statement II are false

D

Statement I is false but Statement II is true

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