NEET BIOLOGY

Detailed explanation-1: -Detailed Solution. The Correct answer is Degradation of Matter. Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water.

Detailed explanation-2: -Rusting is an example of a chemical change.

Detailed explanation-3: -The burning of wood is not a physical change because new substances like carbon dioxide and water vapour are formed along with heat and light. In the other cases like cutting of wood, breaking of glass and melting of gold, no new substance is formed. Hence, these are the physical changes.

Detailed explanation-4: -The formation of rust is a chemical change because rust is a different kind of matter than the iron, oxygen, and water present before the rust formed.

Detailed explanation-5: -∙ Rusting of iron forms a new substance called iron oxide and this is a chemical change.