Give two examples for each of the following :

(a) Substances which sublime.

(b) Substances which do not change their states.

(c) Substances which are rigid and not compressible.

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(a) Substances which sublime.

Naphthalene, camphor, dry ice.

(b) Substances which do not change their states.

Paper, sugar.

(c) Substances which are rigid and not compressible.

Glass, stone, pen.

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