4. Can a substance be changed from solid to gaseous state directly without being changed into its liquid state? Give examples.

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Solution

Part 1 : Sublimation
Sublimation is the process in which a substance in a solid state gets converted into the gaseous state without passing through an intermediate liquid state.
Part 2: Examples of sublimation
Naphthalene is a substance that sublimes. It changes directly to the gaseous state without changing into a liquid state.
Dry ice gets converted directly into a gaseous state.

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