Which of the following mixture can be separated completely by the process of sublimation ?(1) fine sand and cane sugar(2) sodium chloride and potassium permanganate(3) potassium chloride and ammonium chloride(4) barium chloride and sodium sulphate
Correct answer: (3) potassium chloride and ammonium chloride
Explanation: When the solid phase directly converts to gas phase on heating, it is known as sublimation. Hence, only potassium chloride and ammonium chloride can be separated by sublimation as ammonium chloride directly converts to the gas phase on heating.
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