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

The correct order of reactivity of $\mathrm{CH}_3 \mathrm{Br}$ in methanol with the following nucleophiles is

$\mathrm{F}^{-}, \mathrm{I}^{-}, \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}$and $\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}$

A

$\mathrm{I}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{F}^{-}$

B

$\mathrm{I}^{-}>\mathrm{F}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}$

C

$\mathrm{I}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}$

D

$\mathrm{I}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}$

2
JEE Main 2026 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Two p-block elements X and Y form fluorides of the type $\mathrm{EF}_3$. The fluoride compound $\mathrm{XF}_3$ is a Lewis acid and $\mathrm{YF}_3$ is a Lewis base. The hybridizations of the central atoms of $\mathrm{XF}_3$ and $\mathrm{YF}_3$ respectively are

A

$\mathrm{sp}^2$ and $\mathrm{sp}^3$

B

Both $\mathrm{sp}^3$

C

Both $\mathrm{sp}^2$

D

$\mathrm{sp}^3$ and $\mathrm{sp}^2$

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

A first row transition metal $(\mathrm{M})$ does not liberate $\mathrm{H}_2$ gas from dilute HCl .1 mol of aqueous solution of $\mathrm{MSO}_4$ is treated with excess of aqueous KCN and then $\mathrm{H}_2 \mathrm{~S}(\mathrm{~g})$ is passed through the solution. The amount of MS (metal sulphide) formed from the above reaction is $\_\_\_\_$ mol.

A

1

B

2

C

0

D

3

4
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 Thermodynamic Process List-II Magnitude in kJ
A. Work done in reversible, isothermal expansion of 2 mol of ideal gas from 2
<mrow data-mjx-texclass="ORD">

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

</mrow>

<mn>3</mn>
2
<mrow data-mjx-texclass="ORD">

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

</mrow>

<mn>3</mn>
2dm^(3)
to 20
<mrow data-mjx-texclass="ORD">

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

</mrow>

<mn>3</mn>
20
<mrow data-mjx-texclass="ORD">

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

</mrow>

<mn>3</mn>
20dm^(3)
at 300 K .
I. 4
B. Work done in irreversible isothermal expansion of 1 mol ideal gas from 1
<mrow data-mjx-texclass="ORD">

  <mtext> </mtext>

  <mi mathvariant="normal">m</mi>

</mrow>

<mn>3</mn>
1
<mrow data-mjx-texclass="ORD">

  <mtext></mtext>

  <mi mathvariant="normal">m</mi>

</mrow>

<mn>3</mn>
1m^(3)
to 3
<mrow data-mjx-texclass="ORD">

  <mtext> </mtext>

  <mi mathvariant="normal">m</mi>

</mrow>

<mn>3</mn>
3
<mrow data-mjx-texclass="ORD">

  <mtext></mtext>

  <mi mathvariant="normal">m</mi>

</mrow>

<mn>3</mn>
3m^(3)
at 300 K against a constant pressure of 3 kPa .
II. 11.5
C. Change in internal energy for adiabatic expansion of a 1 mol ideal gas with change of temperature = 320
<mtext> </mtext>

<mi mathvariant="normal">K</mi>
= 320
<mtext></mtext>

<mi mathvariant="normal">K</mi>
=320K
and
<mover>

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

    <mi mathvariant="normal">C</mi>

  </mrow>

  <mo accent="true">―</mo>

</mover>

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

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

    <mi mathvariant="normal">V</mi>

  </mrow>

</mrow>
=
<mn>3</mn>

<mn>2</mn>
<mi mathvariant="normal">R</mi>
<mover accentunder="false">

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

    <mi mathvariant="normal">C</mi>

  </mrow>

  <mo>¯</mo>

</mover>

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

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

    <mi mathvariant="normal">V</mi>

  </mrow>

</mrow>
=
<mn>3</mn>

<mn>2</mn>
<mi mathvariant="normal">R</mi>
bar(C)_(V)=(3)/(2)R
.
III. 6
D. Change in enthalpy at constant pressure of 1 mol ideal gas with change of temperature = 337
<mtext> </mtext>

<mi mathvariant="normal">K</mi>
= 337
<mtext></mtext>

<mi mathvariant="normal">K</mi>
=337K
and
<mover>

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

    <mi mathvariant="normal">C</mi>

  </mrow>

  <mo accent="true">―</mo>

</mover>

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

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

    <mi mathvariant="normal">p</mi>

  </mrow>

</mrow>
=
<mn>5</mn>

<mn>2</mn>
<mi mathvariant="normal">R</mi>
<mover accentunder="false">

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

    <mi mathvariant="normal">C</mi>

  </mrow>

  <mo>¯</mo>

</mover>

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

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

    <mi mathvariant="normal">p</mi>

  </mrow>

</mrow>
=
<mn>5</mn>

<mn>2</mn>
<mi mathvariant="normal">R</mi>
bar(C)_(p)=(5)/(2)R
.
IV. 7
A

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

B

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

C

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

D

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

JEE Main Papers

All year-wise previous year question papers

2023
2021