CBSE Class 9 Science Matter in Our Surroundings Worksheet Set 09

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MATTER IN OUR SURROUNDINGS
 
WORKSHEET-1
 
Multiple Choice Questions
 
1. A diver is able to cut through water in a swimming pool. The property shown by the  matter is.
 
a. the particles are of very very small
 
b. the particles of matter have space between them
 
c. the particles are in solid state
 
d. the particles are running here and there, have no space between them
 
2. Which of the following is found in solid state at room temperature?
 
a. Stone
 
b. sand
 
c. mercury
 
d. both a and b
 
3. The property to flow is unique to fluids. Which one of the following statements is correct?
 
a. Only gases behave like fluids
 
 
b. Gases & solids behave like fluids
 
c. Gases and liquids behave like fluids
 
d. Only liquids are fluids
 
4. Temperature 200 0C equals nearly to
 
a. 300K
 
b. 373K
 
c. 473K
 
d. -73K
 
5. During summer , water kept in an earthen pot becomes cool because of the phenomenon of
 
a. diffusion
 
b. transpiration
 
c. osmosis
 
d. evaporation
 
 
Assertion - Reason Questions
 
The following questions consists of two statements - Assertion & Reason. Answer these questions selecting the appropriate option given below :
 
a. Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
 
b. The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
 
c. Assertion is true but the Reason is false.
 
d. Assertion is false but the Reason is true.
 
6. Assertion: Smell of burning incense stick spreads all around due to the diffusion of its fumes into the air.
 
Reason: Increased temperature results in increased kinetic energy of the molecules.
 
7. Assertion: There is no change in the temperature of a substance when it undergoes a  change of state though it is still being heated.
 
Reason: The heat supplied is absorbed either as latent heat of fusion or as latent heat of vaporisation.
 
1 Mark questions
 
8. Name two natural processes which provide the best evidence for motion of particles in matter.
 
9. Even one or two crystals of copper sulphate can make its solution in water coloured blue. Why?
 
10. Which property of gases makes it possible to fill large volume of gases in small cylinders.
 
11. A spoonful of sugar is added to a beaker containing 500 ml of water and stirred for a while. State any two observations that you will make.
 
12. Suggest a method to liquefy atmospheric gases.
 
13. Why do we feel cool after applying shave lotion or perfume?

2 Mark questions
 
14. A gas jar containing air is placed upside down on a gas jar of bromine vapour. It is observed that after some time, the gas jar containing air also becomes reddish brown. Explain why this happens and name the process involved.
 
15. Predict the physical state of matter in each case from the following characteristics of matter.
 
a. Has a definite volume but no definite shape.
 
b. Is rigid and almost incompressible.
 
c. Kinetic energy of particles is minimum in this state.
 
d. It represents the most highly compressible form of matter.
 
16. Distinguish solids , liquids and gases in a tabular form under the following properties.
 
a. rigidity
 
b. compressibility
 
c. inter particle force of attraction
 
d. kinetic energy of particles.
 
17. What is diffusion and explain why it occurs faster in gases than in liquids?
 
18. Ice, water and steam are three states of a substance and not different substances. Justify.
 
19. Convert the following Celsius temperatures to Kelvin scale
 
e. 00C
 
f. 270C
 
g. -2730C
 
20. Dry ice is obtained when a gas is compressed at high pressure. Name the gas and state what happens to it when the pressure is released.
 
21. Latent heat of evaporation of two liquids A and B is 100J/kg and 150J/kg respectively. Which one can produce more cooling effect and why?
 
22. List any four characteristics of particles of matter.
 
3 Mark questions.
 
23. Give reasons :
 
a. Clothes dry faster on a windy day.
 
b. Smell of perfume travels a few yards away.
 
c. When a solid melts, its temperature remains constant.
 
24. How will you show by experiment that air contains water vapour?
 
25. Distinguish between evaporation and boiling.
 
26. Give reasons for the following:
 
a. Doctors advise to put strips of wet cloth on the forehead of a person having high temperature.
 
b. Ice at 00C is more effective in cooling than water at 00C.
 
c. Liquids have fixed volume but not have fixed shape.
 
27. Why does water have higher boiling point than alcohol? At what temperature (in Kelvin scale), water can be changed into solid state and into vapours?
 
28. Name the processes involved in the following cases.
 
a. solid into liquid
 
b. liquid in to vapour below boiling point.
 
c. solid into vapour/gas
 
d. gas/vapour into liquid
 
e. liquid into solid
 
f. gas/vapour into solid
 
29. Define the following terms :
 
a. Melting point
 
b. Boiling point
 
c. Latent heat of vaporisation
 
 
d. Latent heat of fusion
 
e. Sublimation
 
f. Evaporation
 
 
Please click on below link to download CBSE Class 9 Science Matter in Our Surroundings Worksheet Set I

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Are these Science Class 9 worksheets based on the 2026-27 competency-based pattern?

Yes, our CBSE Class 9 Science Matter in Our Surroundings Worksheet Set 09 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 9.

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