Which one of the following is not a chemical change?
(a) formation of curd (b) ripening of banana
(c) sublimation of naphthalene (d) corrosion of photo frame

Academic Chemistry NCERT Class 9

Correct Answer: (c) sublimation of naphthalene

Explanation: Sublimation of naphthalene is not a chemical change as naphthalene only changes its state from solid to vapour. No new substance is formed and the vapour can again be condensed to solid form.

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Updated on: 10-Oct-2022

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