Question

90. Consider the following sentences and choose the incorrect one: (a) Cooking causes breakdown of complex molecules of carbohydrates, fats and proteins into smaller molecules.
(b) Rusting is a reddish brown flaky substance that forms on the surface of any substances.
(c) Chemical change is permanent and irreversible change.
(d) Cooking is regarded as a decomposition reaction. ​

Answer 1

Answer:

Option C

Explanation:

The term Rust can only be used for metals and not all substances.