Assertion (A): Solutions do not exhibit the Tyndall effect.

Reason (R): The particles in solutions are larger than 100 nm, so they cannot scatter light.

Choose the correct option:

(a) Both (A) and (R) are true, and (R) is the correct explanation of (A).

(b) Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(c) (A) is true but (R) is false.

(d) (A) is false but (R) is true.

(c) (A) is true but (R) is false.

Explanation: The Tyndall effect is the scattering of light by particles present in a mixture. It is shown by colloids and suspensions, but not by true solutions. The particles in a true solution are very small, usually less than 1 nm in diameter, not larger than 100 nm. Due to their extremely small size, solution particles cannot scatter light effectively. Therefore, true solutions do not show the Tyndall effect.