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Permanent Hardness

easily forms ...

Question

_________________easily forms rich lather with soap.

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Solution

Soft water
Water that does not have dissolved more calcium and magnesium is called soft water. For example rainwater.
As soft water has fewer Calcium ions, there is a good lathering action of soaps and no soap scum is formed in normal washing.
Therefore, soft water easily forms a rich lather with soap.

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Hard water gives a rich lather with soap.

Q. Four students recorded the following information while adding soap in distilled water and in hand pump water .
a) soap forms lather easily in distilled water as well as in hand pump water .
b) soap forms lather easily in distilled water
c) soap forms lather easily in hand pump water
d) soap don't form later easily in distilled water

Q. Soap form lathers in hard water, but a detergent does not.

Q. While washing clothes in hard water,
(a) soap forms lather.
(b) small amount of soap is used.
(c) large amount of soap is used.
(d) soap gives a clear solution.

Hard water easily forms lather with soap.

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