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Which of these is an example of a chemical change?

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in Biology – Class 11 by (272k points)
Which of these is an example of a chemical change?

(a) Melting of ice

(b) Evaporation of water

(c) Hydrolysis of glucose

(d) Rusting of iron

This question was addressed to me during an interview.

The question is from Biomolecules in portion Biomolecules of Biology – Class 11

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Right choice is (c) Hydrolysis of glucose

For explanation I would say: The melting of ice into water, the evaporation of water to water vapor and the freezing of water are examples of physical changes. However, the hydrolysis of glucose involves the breaking of bonds. It is a chemical change.

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