1
JEE Main 2025 (Online) 2nd April Evening Shift
MCQ (Single Correct Answer)
+4
-1
The type of hybridization and the magnetic property of $\left[\mathrm{MnCl}_6\right]^{3-}$ are,
A
$s p^3 d^2$, paramagnetic with four unpaired electrons.
B
$d^2 s p^3$, paramagnetic with four unpaired electrons.
C
$\mathrm{sp}^3 \mathrm{~d}^2$, paramagnetic with two unpaired electrons.
D
$\mathrm{d}^2 \mathrm{sp}^3$, paramagnetic with two unpaired electrons.
2
JEE Main 2025 (Online) 2nd April Evening Shift
MCQ (Single Correct Answer)
+4
-1

$$ \text { Match List - I with List - II. } $$

List - I
(Purification technique)
List - II
(Mixture of organic compounds)
(A) $$
\text { Distillation (simple) }
$$
(I) Diesel + Petrol

(B) $$
\text { Fractional distillation }
$$
(II) Aniline + Water

(C) $$
\text { Distillation under reduced pressure }
$$
(III)
Chloroform + Aniline


(D) $$
\text { Steam distillation }
$$
(IV)
Glycerol + Spent-lye

$$ \text { Choose the correct answer from the options given below : } $$

A
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
B
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
C
(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
D
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
3
JEE Main 2025 (Online) 2nd April Evening Shift
MCQ (Single Correct Answer)
+4
-1
The d-orbital electronic configuration of the complex among $\left[\mathrm{Co}(\mathrm{en})_3\right]^{3+},\left[\mathrm{CoF}_6\right]^{3-}$, $\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ and $\left[\mathrm{Zn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ that has the highest CFSE is :
A
$t_{2 g}{ }^6 e_g^0$
B
$t_{2 g}{ }^3 e_g^2$
C
$\mathrm{t}_{2 \mathrm{~g}}{ }^4 \mathrm{e}_{\mathrm{g}}{ }^2$
D
$t_{2 g}{ }^6 e_g^4$
4
JEE Main 2025 (Online) 2nd April Evening Shift
MCQ (Single Correct Answer)
+4
-1

Consider the following chemical equilibrium of the gas phase reaction at a constant temperature : $\mathrm{A}(\mathrm{g}) \rightleftharpoons \mathrm{B}(\mathrm{g})+\mathrm{C}(\mathrm{g})$

If $p$ being the total pressure, $K_p$ is the pressure equilibrium constant and $\alpha$ is the degree of dissociation, then which of the following is true at equilibrium?

A

If $K_p$ value is extremely high compared to $p, \alpha$ becomes much less than unity

B
When p increases $\alpha$ increases
C
If p value is extremely high compared to $\mathrm{K}_{\mathrm{p}}, \alpha \approx 1$
D
When $p$ increases $\alpha$ decreases
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