Question

Which of the following statements are correct about properties of colloids?

(i) A colloid is a homogeneous mixture.

(ii) The size of particles of a colloid is too small to be individually seen by naked eye

(iii) Colloids are big enough to scatter a beam of light passing through it and make its path visible.

(a) i, ii and ii (b) i and iii (c) ii and iii (d) i and iii​

Answer 1

Answer:

ans is ç

Explanation:

1.Colloidal solution are heterogeneous

2.Size of the colloidal particle is between 1 nm and 1000 nm.

3.Since the size of the particles of a colloidal solution lie in the range of the wavelength of the visible spectrum of light, the interaction between the beam of light and the particles is good enough to scatter the beam in all directions making its path visible.

I hope it's help you...

Answer 2

The correct option for the properties of colloids is- (c) ii and iii.

• Colloids are the heterogeneous mixture of the dispersed phase and the dispersion medium.
• The particles are very small in size and hence we cannot see them by the naked eye.
• A colloidal solution is stable as the particles do not settle down when left undisturbed.
• When a beam of light is passed through them, they scatter it making its path visible. This is called the Tyndall effect.
• The colour of the colloidal solution depends on the dispersed phase and dispersion medium of the solution and its size.