Introduction
In this post, you will know the important question of chapter Important Question Answer of Matter in our Surrounding Class 9
1. Name the processes which provide the best evidence for motion of particles in matter.
Answer. 1) Diffusion 2) Brownian movement
2. Why solid substances do not diffuse?
Answer. Hard solid substance do not diffuse due to strong intermolecular forces.
3. When potassium permanganate dissolves in water, what term do we use?
Answer. Solution
4. What is solute in potassium permanganate solution?
Answer. KMnO4 (Potassium permanganate)
5. What is the solute in KMnO4 solution?
Answer. Water.
6. What is the color of KMnO4 solution?
Answer. Purple
7. What is the name of the process when bromine vapors get mixed up with air?
Answer. Diffusion
8. When potassium permanganate dissolves in water, what term do we use?
Answer. Solution
9. What is solute in potassium permanganate solution?
Answer. KMnO4 (Potassium permanganate)
10. What is the solute in KMnO4 solution?
Answer. Water.
11. What is the color of KMnO4 solution?
Answer. Purple
12. What is the name of the process when bromine vapor's get mixed up with air?
Answer. Diffusion
13. Name the process which occurs when a drop of Dettol is added to water.
Answer. Diffusion take place, when Dettol is added to water.
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