State two ways, by which a saturated solution can be changed to unsaturated solution.
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A saturated solution can be changed to an unsaturated solution by:
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What do you understand by:
(a) Soft water
(b) Hard water
(c) Temporary Hard water
(d) Permanent hard water.
What are the causes for
(a) Temporary hardness
(b) Permanent hardness
What is a soap, what is it used for?
What is the advantage of a detergent over soap ?