Question

Example of gaseous solution is

• A. Solution of camphor in nitrogen.
• B. Solution of hydrogen in palladium.
• C. Amalgam of mercury with sodium.
• D. Oxygen dissolved in water.

Hint:

In gaseous solutions, the solvent is always a gas. Common examples include mixtures of gases (like air) or solids dispersed in gases (like camphor in nitrogen).

Answer 1

The Correct Option is A

A gaseous solution refers to a homogeneous mixture in which the solvent is a gas. The solute may be solid, liquid, or gas, but the solvent must be a gas.
Let us analyze the given options one by one:
1. \( \text{(A)} \) Solution of camphor in nitrogen: Here nitrogen is the solvent (gas) and camphor particles get dispersed in it. This forms a gaseous solution. This is the correct example.
2. \( \text{(B)} \) Solution of hydrogen in palladium: This represents a solid solution, since palladium is a metal and hydrogen gas occupies interstitial sites in its lattice. This is not a gaseous solution.
3. \( \text{(C)} \) Amalgam of mercury with sodium: This is a solid–liquid type solution, where sodium dissolves in mercury to form an amalgam. It is not a gaseous solution.
4. \( \text{(D)} \) Oxygen dissolved in water: This is a gas–liquid solution, not a gaseous solution.
Hence, the correct answer is option (A) Solution of camphor in nitrogen.