Match List-I with List-II :
| List-I | List-II |
| (A) Negatively charged sol | (I) Fe2O3.xH2O |
| (B) Macromolecular colloid | (II) CdS sol |
| (C) Positively charged sol | (III) Starch |
| (D) Cheese | (IV) a gel |
Choose the correct answer from the options given below:
The correct answer is (C) : (A) – (II), (B) – (III), (C) – (I), (D) – (IV)
(A) Negatively charged sol - CdS sol
(B) Macromolecular colloid - Starch
(C) Positively charged sol - Fe2O3.xH2O
(D) Cheese - A gel
A substance 'X' (1.5 g) dissolved in 150 g of a solvent 'Y' (molar mass = 300 g mol$^{-1}$) led to an elevation of the boiling point by 0.5 K. The relative lowering in the vapour pressure of the solvent 'Y' is $____________ \(\times 10^{-2}\). (nearest integer)
[Given : $K_{b}$ of the solvent = 5.0 K kg mol$^{-1}$]
Assume the solution to be dilute and no association or dissociation of X takes place in solution.
Method used for separation of mixture of products (B and C) obtained in the following reaction is: 
A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.
For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.
The solutions can be classified into three types:
On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types: