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Q76. Consider the following pairs:

Type of Colloid             Example

1. Aerosol                         Fog

2. Emulsion                      Milk

3. Gel                               Butter

4. Foam                            Sponge

Which of the pairs given above is/are correctly matched?



A

(a) Only 1, 2 and 4

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B

(b) Only 1 and 3

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C

(c) Only 2, 3 and 4

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D

(d) All of the above

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Solution

The correct option is B

(d) All of the above


The particles of a colloid are uniformly spread throughout the solution. Due to the relatively smaller size of particles, as compared to that of a suspension, the mixture appears to be homogeneous. But actually, a colloid is a heterogeneous mixture

Type of colloid             Example

Aerosol                         Fog, clouds, mist

Emulsion                      Milk, face cream

Gel                               Jelly, cheese, butter

Foam                            Rubber, Sponge, Pumice


All India Test Series

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