Riya performs two set of experiments to study the length of the foam formed which are as follows:
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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Set I will have more length of foam because it consists of soft water.
Set II will form less foam because it consists of hard water due to the presence of CaSO4.
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