An efflorescent compound is a substance that?
-
A.
absorbs water froom the air without dissolving in it -
B.
is capable of giving off coloured luminosity -
C.
gives out water to the atmosphere -
D.
absorbs water from the air and dissolves in it -
E.
gives out its water of crystallization on heating
Correct Answer: Option C
Explanation
Efflorescence is a phenomenon where a crystalline salt loses all or part of its water of crystallization when exposed to the atmosphere to form a lower dehydrate or an anhydrous salt.