Question

Match the following The correct answer is

• A. A-IV, B-II, C-III, D-I
• B. A-III, B-I, C-IV, D-II
• C. A-III, B-II, C-IV, D-I
• D. A-IV, B-I, C-II, D-III

Hint:

Memorize the table of colloid types. Key examples: Sol (Solid in Liquid) - Paint, Cell fluids. Gel (Liquid in Solid) - Cheese, Butter, Jellies. Emulsion (Liquid in Liquid) - Milk, Hair cream. Foam (Gas in Liquid) - Whipped cream, Froth. Aerosol (Solid/Liquid in Gas) - Smoke (Solid in Gas), Fog/Cloud (Liquid in Gas).

Answer 1

The Correct Option is C

Let's define each type of colloid based on its dispersed phase and dispersion medium.
A. Sol: A sol is a colloid where a solid is the dispersed phase and a liquid is the dispersion medium. - Example: Paint consists of solid pigment particles dispersed in a liquid medium. So, A matches with III.
B. Foam: A foam is a colloid where a gas is the dispersed phase and a liquid is the dispersion medium. - Example: Whipped cream is made by dispersing air (gas) into cream (liquid). So, B matches with II.
C. Gel: A gel is a colloid where a liquid is the dispersed phase and a solid is the dispersion medium. It forms a semi-solid network. - Example: Butter is an emulsion of water (liquid) dispersed in fat (solid). It has a gel-like consistency. So, C matches with IV. (Jelly is another common example).
D. Aerosol: An aerosol is a colloid where either a solid or a liquid is the dispersed phase and a gas is the dispersion medium. - Example: Cloud consists of fine water droplets (liquid) dispersed in air (gas). Fog and mist are similar examples. So, D matches with I.
Matching the lists: A $\rightarrow$ III B $\rightarrow$ II C $\rightarrow$ IV D $\rightarrow$ I
This corresponds to option (C).