Take two test tubes X and Y with 10 mL of hard water in each. In test tube 'X', add few drops of soap solution and in test tube Y add a few drops of detergent solution. Shake both the test tubes for the same period. (a) In which test tube the formation of foam will be more ? Why? (b) In which test tube is a curdy solid formed? Why?

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TextStructure and Cleansing Action of SoapsMicelle Formation in SoapsHard Water and Its Effect on Soaps