Question

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

Answer 1

When the solid phase directly converts to gas phase on heating, it is known as sublimation. So, among the following options, only potassium chloride and ammonium chloride can be separated by sublimation as ammonium chloride directly converts to the gas phase on heating.

Hence, the correct answer is option 3.