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Identify the foam from the following.

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in Engineering Chemistry II by (789k points)
Identify the foam from the following.

(a) Bubbles

(b) Cake

(c) Froths of air

(d) Soap

I got this question in an interview for job.

The query is from Colloids topic in chapter Surface Chemistry of Engineering Chemistry II

1 Answer

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Correct answer is (c) Froths of air

The explanation is: We know that froths of air are similar to bubbles but they have more moisture content in them as compared to bubbles. The composition of froths is nothing but a mixture of water and moisture. Hence it is gas-liquid foam.

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