Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.

(a) What could X be?


(b) What could Y be?


(c) Name the process Z.


(d) Which process would you use to recover both the components X and Y from tincture of iodine?


(e) Which process can be used to recover only component Y from tincture of iodine?

(a) Alcohol

(b) Iodine


(c) The process of sublimation is used to separate those substances from a mixture which sublime oh heating. Iodine has the property to sublime.


(d) Distillation is a method used for the separation of components of a mixture containing two miscible liquids that boil without decomposition and have sufficient difference in their boiling points.


(e) Evaporation is used to separate a solid substance that has dissolved in water.


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