Answers

2016-02-16T20:23:43+05:30
Efflorescence is the migration of a salt to the surface of a porous material, where it forms a coating.The essential process comprises the dissolving of an internally-held salt in water, or occasionally in another solvent. The water, with the salt now held in solution, migrates to the surface, then evaporates, leaving a coating of the salt.
example.
sodium carbonate deca hydrate
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2016-02-16T20:28:45+05:30
Efflorescence is a crystaline deposit on surfaces of masonry, stucco or concrete. It is whitish in appearance, and is sometimes referred to as "whiskers".
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