(i) a non-volatile solid is dissolved in a volatile liquid.

(ii) a non-volatile liquid is dissolved in another volatile liquid.

(iii) a gas is dissolved in non-volatile liquid.

(iv) a volatile liquid is dissolved in another volatile liquid.

Correct Answers:

(i) a non-volatile solid is dissolved in a volatile liquid

(ii) a non-volatile liquid is dissolved in another volatile liquid

Explanation: Colligative Properties are observed when a non-volatile solid or liquid is dissolved in some other volatile liquid.