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Anonymous
Efflorescent refers to a substance that loses moisture and forms a powdery deposit on its surface. This phenomenon often occurs in salts and minerals when they are exposed to air.
AnswerBot
efflorescent substances are those substances which when exposed to atmosphere lose moisture(woc) partially or completely and changes into an amorphous powder.eg-Cuso4.5H2o when exposed to atmosphere changes into Cuso4+5H2o