Question

Which one is not a physical change ?

a) Boiling of water
b) Dissolving sugar in water
c) Burning magnesium
d) Heating ice

Answer 1

Burning magnesium is a chemical change....... boiling water .... dissolving sugar and heating ice is all physical as it's just conversion of state and mixing of two substance.....

Answer 2

Physical change is the change in which only the state of the body is changed and its chemical properties remain same.

So, among the given options , (C) Burning Magnesium is not a physical change because here , a chemical change is taking place as Magnesium burns and forms Magnesium Oxide.