Match List I with List II

A-3; B-2; C-4; D-1

The correct answer is option 3. A-3; B-2; C-4; D-1

Let us go through each of the noble gases listed in List I and their corresponding descriptions in List II:

A. He (Helium): 3.  Cryogenic

Helium is widely used in cryogenics because it has a very low boiling point, making it suitable for cooling applications, such as in MRI machines and superconductors.

B. Ar (Argon): 2. Provides inert atmosphere in metallurgy

Argon is often used in welding and metallurgy industries to create an inert atmosphere, preventing the oxidation of metals during high-temperature processes.

C. Ne (Neon): 4. Advertising sign

Neon is famous for its use in neon signs, where it emits a bright, colorful glow when an electric current passes through it. These signs are commonly used for advertising and decorative purposes.

D. Xe (Xenon): 1. Ionization energy comparable to \(O_2\)

Xenon has ionization energies that are somewhat comparable to those of oxygen. This property makes it useful in various applications, including lighting (such as xenon headlights) and ion propulsion systems.

Thus, each noble gas is matched with its appropriate use or characteristic.