Question

Which of the following statement(s) is/are true about Brownian movement?

• A. It depends on nature of colloid
• B. It depends on size of particle
• C. It depends on viscosity of the solution
• D. It depends on temperature

Answer 1

Answer: (B), (C), (D)

It depends on temperature

Brownian movement:
Under ultramicroscope, colloidal particles appear t​o be in a continuous ​zig-zag motion​ known as Brownian movement.
1. It is independent of the nature of colloids.
2. It depends on size of particle.
$\text{Mobility}\propto \frac{1}{\text{Size of particle}}$

3. It depends on viscosity of the solution.
$\text{Mobility}\propto \frac{1}{\text{Viscosity}}$

4. It depends on temperature.
$\text{Mobility}\propto \text{Temperature}$