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Question
What is sublimation?
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Solution
The change of a solid substance directly into a gas or vapour without first changing into a liquid is called sublimation.
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.............. is a process that involves direct conversion of a solid into its vapour on heating.
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“On heating, some solid substances change from solid to vapour state without passing through liquid state.” The technique used for the purification of such solid substances based on the above principle is known as:
