SSC MTS EXAM

Detailed explanation-1: -Cutting logs of wood into small pieces is a physical change because no new substance is produced or formed.

Detailed explanation-2: -Cutting your hair is a physical change. A physical change happens when a substance is altered somehow but remains the same substance. It is not chemically changed. For example, when you cut your hair, it is still your hair; you have simply removed some of it.

Detailed explanation-3: -When iron is melted only the state of iron changes. The solid iron changes its state of matter as solid turns liquid. Thus, it’s a physical change.