Match List I with List II
| List I | List II |
| A. He | 1. Ionization energy comparable to O2 |
| B. Ar | 2. Provides inert atmosphere in metallurgy |
| C. Ne | 3. Cryogenic |
| D. Xe | 4. Advertising sign |
Answer & explanation
Correct answer: option 3
The correct answer is option 3. A-3; B-2; C-4; D-1
| List I | List II |
| A. He | 3. Cryogenic |
| B. Ar | 2. Provides inert atmosphere in metallurgy |
| C. Ne | 4. Advertising sign |
| D. Xe | 1. Ionization energy comparable to O2 |
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.