A student was asked to take 10 ml of rainwater in test tube A and l g of calcium sulphateadded to 10 ml of distilled both the test tubes B. He added couple of drops of soap solution to both A and B. After shaking both the test tubes equal number of times, whatdid the student observe ?

A student was asked to take 10 ml of rainwater in test tube A and l g

1.	A student was asked to take 10 ml of rainwater in test tube A and l g of calcium sulphateadded to 10 ml of distilled both the test tubes B. He added couple of drops of soap solution to both A and B. After shaking both the test tubes equal number of times, whatdid the student observe ?
Answer» Solution :The student OBSERVED that the length of the foam produced is maximumin A This is because CALCIUM sulphate ADDED to TEST tube B makeswater hard and thus produces less foam