Question : Iodine can be separated from a mixture of Iodine and potassium chloride by
Option 1: sedimentation
Option 2: Filtration
Option 3: sublimation
Option 4: distillation
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Correct Answer: sublimation
Solution : The correct option is sublimation.
Iodine can be separated from a mixture of iodine and potassium chloride through a process called sublimation. Sublimation is a physical process in which a solid substance transitions directly into a gas without passing through the liquid phase. The steps in this process are : heat is applied to the mixture of iodine and potassium chloride. Iodine, being more volatile, turns directly from a solid to a gas and rises. Iodine vapors are allowed to condense on a cooler surface. The condensed iodine forms back into a solid on the surface.This way, iodine is separated from the mixture through sublimation.
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