Question

Foam accumulates on the surface of dal kept for a long time in summer

Answer 1

There are two theories.

1. The lentils have glycosides, it is called as saponins when saponins add with water, it distributed, the saponins have soap like property, so it boils and forms as foam.

2. The proteins are contained in the lentils which are all released when it boils, so it forms the foam on the surface.

Answer 2

Explanation:

Foam gets accumulated on the surface of the dal, this happens due to denaturation of protein at high temperature in summer. Denaturation is a process in which protein molecules loses its structure due to breaking of weak chemical bonds.

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