Question

what do u mean by hygroscopy?

Answer 1

It is a substance which absorb water or moisture from surrounding...☺

Answer 2

An hygroscopic substance is able to absorb or absorb water from its surroundings
Typically this occurs at or near ordinary room temperature. Most hygroscopic materials are salts, but many other materials display the property
when water vapour is absorbed,the water molecules are taken into the molecules of substance often resulting in physical changes, such as increased volume. colour,boiling point, temperature, and viscosity can also change.when water vapour is absorbed
,the water molecules remain on the surface of the material
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