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Question
Describe an experiment to demonstrate the process of sublimation.
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Solution
Experiment: Take some Ammonium chloride powder in a china dish. Cover the china dish with an inverted funnel and put a cotton plug-in end of the funnel so that vapours do not escape. Set up the apparatus as shown. Heat the dish with the burner. Solid ammonium chloride changes into vapours. Which when coming in contact with walls of funnel get cooled and change to solid and get deposited there.
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