One word Question Answer
1. Name the processes which provide the best evidence for motion of particles in matter.
Answer. 1) Diffuision
2) Brownian movement
2. Name the process which is responsible for mixing of copper sulphate with water kept in a beaker on its own.
Answer. Diffuison
3. When potassium permanganate dissolves in water, whatbterm do we use?
Answer. Solution
4. What si solute in potassium permanganate solution?
Answer. KMnO4 (Potassium permanganate)
5. What is the solute in KMnO4 solution?
Answer. Water.
6. What is the colour of KMnO4 solution?
Answer. Purple
7. What is the name of the process when bromine vapours get mixed up with air?
Answer. Diffusion
8. When an agarbatti is lighted, fragrance reaches all the corners of room. Name the process.
Answer. Diffusion
9. What is the name of particle which matter is made up of?
Answer. Atoms or molecules.
10. Which physical state is rigid state of matter?
Answer. Solid
11. Name the physical state which are fluid state of matter?
Answer. Gases and liquids.
12. Which physical state has maximum movement of particles?
Answer. Gaseous state.
13. Which physical state has maximum interparticle attraction?
Answer. Solid state.
14. Which physical state has maximum intermolecular space?
Answer. Gaseous state.
15. A substance has fixed volume but not fixed shape. In which physical state does it exist?
Answer. Liquid state.
16. Name the state of matter which can be easily compressed.
Answer. Gaseous state.
17. Name the physical state having fixed shape and fixed volume?
Answer. Solid state.
18. Name the fourth and fifth state of matter.
Answer. Plasma and Bose-Einstein condensate.
19. Which of the following diffuses faster?
(Water vapour, wax or, ethyl alcohol)
Answer. Water vapour
20.
Short Question Answer
1. What happen when an inflated air balloon is pricked with a pin? Name the property of the gaseous state exhibited by this observation?
Answer. The balloon brusts and diffusion takes place.
2. Why solid substances do not diffuse?
Answer. Hard solid substance do not diffuse due to strong intermolecular forces.
3. Name the process which occurs when a drop of dettol is added to water.
Answer. Diffusion take place, when dettol is added to water.
4. Take a iron nail, a piece of chalk and a rubber band. Try breaking them by hammering, cutting or stretching. In which of three substances do you think the particles, are held together with great force?
Answer. In iron nail, the particles are held together with great force.
5. Open a water tap, try breaking the stream of water with your fingers. What could be the reason behind the stream of water remaining together?
Answer. The force of attraction between the particles of water is sufficient to hold the stream of water together.
6. What are the characteristics of the particles of matter?
Answer. 1) The particles of matter have force of attraction between them.
2) The force of attraction keeps the particles together.
3) The strength of this force of attraction varies from one kind of matter to another.
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