Q. Which of the following is/are properties of colloid?
1.A colloid is a homogenous mixture.
2.The size of particles of a colloid is too small to be individually seen by naked eyes.
3.Colloids are big enough to scatter a beam of light passing through it and make its path visible.
Choose the correct answer from below given codes:

[A] 1 only

[B] 1 and 2 only

[C] 2 and 3 only

[D] 1, 2 and 3

Answer: C
Notes:

Explanation: A colloid is a heterogeneous mixture. The size of particles of a colloid is too small to be individually seen by naked eyes. Colloids are big enough to scatter a beam of light passing through it and make its path visible. They do not settle down when left undisturbed, that is, a colloid is quite stable.

Source: Science NCERT 9th Class