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Washing Soda

A soap soluti...

Question

A soap solution was added to the given water samples:-
A- distilled water, B- underground water and C- distilled water and CaSO₄.
Which of the given water sample will produce maximum foam and which will give rise to scum?

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Solution

Which of the given water sample will produce maximum foam---------distilled water
which will give rise to scum---------------------------------------------------distilled water and CaSO₄.

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