Question

Which of the following is not a chemical process?

• A. Rusting of Iron
• B. Changing water into water vapour
• C. Mixing metal acid and base
• D. Baking a cake

Answer 1

The Correct Option is B

Let's analyze each option:

Rusting of Iron: This is a chemical process because iron reacts with oxygen and water to form iron oxide (rust).
Changing water into water vapour: This is a physical process, not chemical, as it involves a change in the state of matter (from liquid to gas) without changing the chemical composition of water.
Mixing metal acid and base: This is a chemical process where a reaction occurs between the metal, acid, and base, resulting in the formation of products.
Baking a cake: This is a chemical process, as it involves chemical reactions (like the formation of new compounds and the release of gases) during baking.

Thus, the correct answer is changing water into water vapour, as this is a physical change, not a chemical change.
 

The correct option is (B): Changing water into water vapour