Riya performs two set of experiments to study the length of the foam f

1.	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.
Answer» Set I will have more length of foam because it consist of soft water. Set II will form less foam because it consist of hard water due to the presence of CaSO₄.

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.

Answer»

Set I will have more length of foam because it consist of soft water.

Set II will form less foam because it consist of hard water due to the presence of CaSO₄.

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