Chapter 15, Problem 21R

To determine

To choose: The correct option.

Answer to Problem 21R

Option (A)

Explanation of Solution

Introduction:

A homogenous composition in which particles of one substance stands dispersed all around uniformly into the other substance is known as colloid.

Combination of two or more elements chemically is known as compound whereas, combination of two or more substance is known as mixture. In mixture, the substance is not connected chemically.

Milk is homogenous mixture in which its particles are suspended uniformly into the other liquid. Hence, milk is said to be colloid. Therefore, the correct option is (A).

Conclusion:

Thus, the correct option is (A).