Match List-I with List-II

Choose the correct answer from the options given below:

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

The correct answer is Option (3) → (A)-(III), (B)-(I), (C)-(IV), (D)-(II)

(A) Gas in Gas solution: This occurs when one gas is mixed with another. Since all gases mix uniformly, air is the most common example.

• Matches with (III): Mixture of oxygen and nitrogen gases.

(B) Gas in Liquid solution: This occurs when a gas is dissolved in a liquid solvent.

• Matches with (I): Oxygen dissolved in water (essential for aquatic life).

(C) Liquid in Solid solution: This is a unique case where a liquid (solute) is dispersed within a solid (solvent).

• Matches with (IV): Amalgam of mercury with sodium. Mercury is a liquid at room temperature, while sodium is solid.

(D) Solid in Solid solution: These are typically alloys where one metal is mixed into another in a molten state and then cooled.

• Matches with (II): Copper dissolved in gold (used to make jewelry harder).