Match the ores in List-I with composition in List-II:
Choose the correct answer from the options given below:
Correct Answer :
(A)-(III), (B)-(IV), (C)-(1), (D)-(11)
Solution :
The correct option is (A)-(III), (B)-(IV), (C)-(I), (D)-(II).
To understand why this match is correct, let us classify each colloid type along with its corresponding example step-by-step:
1. Gel matches with Cheese (A - III):
A gel is a colloidal system in which a liquid is dispersed in a solid medium (liquid-in-solid). Cheese is a classic example of a gel, where liquid water droplets are dispersed throughout a solid network of milk proteins (casein).
2. Foam matches with Whipped cream (B - IV):
Foam is a colloidal system in which a gas is dispersed in a liquid medium (gas-in-liquid). Whipped cream is formed by trapping air (gas) into cream (liquid), which makes it a foam.
3. Emulsion matches with Hair cream (C - I):
An emulsion is a colloidal system consisting of a liquid dispersed in another liquid (liquid-in-liquid). Hair cream is an emulsion, typically consisting of oil droplets dispersed in water or vice versa, stabilized by emulsifiers.
4. Aerosol matches with Dust (D - II):
An aerosol is a colloidal system where solid particles or liquid droplets are dispersed in a gas medium. Dust consists of fine solid particles dispersed in air (solid-in-gas), which classifies it as an aerosol.
By putting these associations together, we get:
(A) Gel ⇒ (III) Cheese
(B) Foam ⇒ (IV) Whipped cream
(C) Emulsion ⇒ (I) Hair cream
(D) Aerosol ⇒ (II) Dust
This corresponds perfectly to the option (A)-(III), (B)-(IV), (C)-(I), (D)-(II).
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