$\begin{array}{|c|}\hline Match\; List-I\; with\; List-II:\\ \hline\end{array}$

$\begin{array}{|c|}\hline \\ \hline\end{array}$
List-I List-II (A) Diamagnetic solid (I) CrO 2 (B) Ferromagnetic solid (II) Fe 3 O 4 (C) Antiferromagnetic solid (III) NaCl (D) Ferrimagnetic solid (IV) MnO

$\begin{array}{|c|}\hline \text{<br>}\\ \hline\end{array}$

$\begin{array}{|c|}\hline \text{Choose the correct answer from the options given below:}\\ \hline\end{array}$

The correct option is (A)-(III), (B)-(I), (C)-(IV), (D)-(II).

To understand why this match is correct, let us analyze the magnetic properties of each solid listed in List-I step-by-step:

1. Diamagnetic Solid:
Diamagnetic substances are weakly repelled by a magnetic field. They do not have any unpaired electrons, meaning all of their electron shells are completely filled. In List-II, sodium chloride ($\text{NaCl}$) is a typical ionic solid where both ${\text{Na}}^{+}$ and ${\text{Cl}}^{-}$ ions have fully filled noble gas configurations with no unpaired electrons. Therefore, $\text{NaCl}$ is diamagnetic.
Match: (A) - (III)

2. Ferromagnetic Solid:
Ferromagnetic substances are strongly attracted by a magnetic field and can be permanently magnetized. In these solids, the magnetic moments of the metal ions (domains) align in the direction of the magnetic field. Chromium dioxide (${\text{CrO}}_2$) is a well-known ferromagnetic oxide that has been widely used in magnetic recording tapes.
Match: (B) - (I)

3. Antiferromagnetic Solid:
Antiferromagnetic substances have domain structures similar to ferromagnetic substances, but their domains are aligned in opposite directions in equal numbers. This mutual cancellation results in a net magnetic moment of zero. Manganese oxide ($\text{MnO}$) is a classic example of an antiferromagnetic material.
Match: (C) - (IV)

4. Ferrimagnetic Solid:
Ferrimagnetic substances are observed when the magnetic moments of the domains are aligned in parallel and antiparallel directions in unequal numbers. This results in a net magnetic moment, making them weakly attracted by magnetic fields compared to ferromagnetic materials. Magnetite (${\text{Fe}}_3{\text{O}}_4$) is a representative example of a ferrimagnetic solid.
Match: (D) - (II)

Combining all the correct pairings, we obtain: (A)-(III), (B)-(I), (C)-(IV), (D)-(II).