Question Details

Match the ores in List-I with composition in List-II:

List-I List-II (A) Gel (I) Hair cream (B) Foam (II) Dust (C) Emulsion (III) Cheese (D) Aerosol (IV) Whipped cream

Choose the correct answer from the options given below:

Options

A

(A)-(1), (B)-(IV), (C)-(III), (D)-(I1)

B

(A)-(IV), (B)-(I), (C)-(III), (D)-(I1(


C

(A)-(1), (B)-(II), (C)-(III), (D)-(IV)

D

(A)-(III), (B)-(IV), (C)-(1), (D)-(11)


Show Answer

Correct Answer :

Option D

(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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