Question

Choose the statements applicable to both true solutions and colloids:

1. Particles cannot be separated by filtration.
2. Path of the light beam is visible, on passing an intense beam of light.
3. Particles do not settle down when kept undisturbed.

• A. iii only
• B. i only
• C. All
• D. i, iii

Answer 1

Answer:

D. i, iii

• Particles cannot be separated by filtration: This statement is true for both true solutions and colloids. The particles in both are small enough to pass through a filter paper and cannot be separated by simple filtration. • Particles do not settle down when kept undisturbed: This statement is true for both true solutions and colloids. Both are stable, and their particles do not settle down over time when left undisturbed. In contrast, a suspension's particles would settle.