Chemistry
The Refrigerant 'FREON' is

Difluoro Dichloro Methane
Hydrofluosilicic Acid
Calcium Tetra Fluoride
Fluorspar and Felspar

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Chemistry
Table salt gets moist during rainy season because

Sodium chloride is deliquescent
Sodium chloride contains some quantity of sodium iodide
Sodium chloride is hygroscopic
Sodium chloride contains hygroscopic impurities like magnesium chloride

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