CBSE Class 9 Answered

(a) A solution is a homogenous mixture of two or more than two substances for e.g. solution of sugar in water. 

(b) Properties of solution are:

     1. A solution is a homogeneous mixture .

     2. The particles of a solution are smaller than 1 nm (10^-9 metre) in diameter. So, they cannot be seen by naked eyes.

     3. The particles of solution do not scatter a beam of light passing through the solution.

     4. The solute particles cannot be separated from the mixture by the process of filtration.

(b) Concentration of a solution is the amount of solute present in a given amount of solution.

Formula:

Or

Characteristics :-