Question: Riya performs two set of experiments to study the length of the foam formed which are as follows: Set I: She takes 10 ml of

Riya performs two set of experiments to study the length of the foam formed which are as follows:

Set I: She takes 10 ml of distilled water in test tube “A” and adds 5-6 drops of liquid soap in it and shakes the test tube vigorously.

Set II: She takes 10 ml of distilled water in a test tube “A” and adds 5-6 drops of liquid soap with half spoonful of CaSO4 in it and shakes the test tube. Write your observation and reason.

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