MCQ Effect of Heat and Pressure on Matter Chapter 1 Class 9 Science

MCQ’s For All Chapters – Science Class 9th

1. There will be total 23 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Particles of matter are continuously moving. What is the effect of rise in temperature on moving particles?

With rise in temperature, particles move faster

With rise in temperature, particles stop moving

With rise in temperature, particles move slowly

None of the above

Your comments:

Question 1 of 23

2. Latent heat of fusion is the amount of heat energy required to change:

1 kg of solid into its gaseous state at its boiling point

1 kg of liquid into its solid state at its freezing point

1 kg of liquid into its gaseous state at its boiling point

1 kg of solid into its liquid state at its melting point

Your comments:

Question 2 of 23

3. The hardness of solids is due to the fact that their particles:

Have strong forces of attraction between them.

Are held very close to each other.

Have fixed positions.

All of the above.

Your comments:

Question 3 of 23

4. Which of the following are the required conditions for the liquefaction of gases?

High pressure, low temperature

Low pressure, high temperature

High pressure, high temperature

Low pressure, low temperature

Your comments:

Question 4 of 23

5. Why do naphthalene balls disappear with time without leaving any solid behind?

Due to melting

Due to freezing

Due to boiling

Due to sublimation

Your comments:

Question 5 of 23

6. In which state does water exist at 50° C?

Liquid

Solid

Gas

None of the above

Your comments:

Question 6 of 23

7. Identify A in the given conversion.

Fusion

Sublimation

Condensation

Vaporisation

Your comments:

Question 7 of 23

8. Which property of a gas helps to fill a large volume of liquefied petroleum gas (LPG) in cylinders?

High fluidity

Low density

High inflammability

High compressibility

Your comments:

Question 8 of 23

9. The boiling point of alcohol in Kelvin scale is 351K. What will be its boiling point in Celsius scale?

151°C

251°C

78°C

178°C

Your comments:

Question 9 of 23

10. What happens when a liquid becomes a gas?

The particles of solid absorb all the heat energy and there occurs no change in the distance between them.

The particles of liquid absorb heat energy and distance between them increases.

The particles of liquid absorb heat energy and distance between them decreases.

The particles of liquid do not absorb heat energy and distance between them increases .

Your comments:

Question 10 of 23

11. Which of the following substances sublime at room temperature?

Dry ice

Iodine

Ammonium chloride

Camphor

Your comments:

Question 11 of 23

12. What will be the state of a substance below its freezing point?

Plasma state

Liquid state

Gaseous state

Solid state

Your comments:

Question 12 of 23

13. How does the state of matter change during fusion process?

Gas changes to solid

Solid changes to liquid

Gas changes to liquid

Liquid changes to gas

Your comments:

Question 13 of 23

14. What happens when ice is heated?

Molecules move away from each other and ice changes into water.

Molecules come closer and ice changes into water.

Ice absorbs all the heat without change in state.

None of the above.

Your comments:

Question 14 of 23

15. The temperature at which a liquid changes into its gaseous form is called _________.

boiling point

melting point

freezing point

triple point

Your comments:

Question 15 of 23

16. When water solidifies to ice, then heat is _______.

Remains constant

Absorbed

Depending on the condition it may be absorbed or evolved.

Evolved

Your comments:

Question 16 of 23

17. Which of the following pictures represents the arrangement of particles in liquids?

Picture 1

Picture 1 as well as picture 2

Picture 2

Picture 2 as well as picture 3

Your comments:

Question 17 of 23

18. The boiling point of water and melting point of ice are _______ and _______ respectively.

273 K ; 0°C

0°C ; 273 K

100 K ; 100 K

373 K ; 273 K

Your comments:

Question 18 of 23

19. What will happen to a gas when it is compressed in a cylinder with the help of a piston?

The gas evaporates.

The gas gets solidified.

The gas liquefies.

No change occurs.

Your comments:

Question 19 of 23

20. ASSERION-Dilution of any colored compound in water shows light color than original color of compound.) ( hint- potassium permanganate dissolve in water)

REASON-when dilution is done by water the quantity of particle getting decreases by dilution hence it shows light color.

a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.

b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c.) Assertion is true but Reason is false.

d.) Assertion is false but Reason is true

Question 20 of 23

21. ASSERION-Dilution of any colored compound in water shows light color than original color of compound.) (hint- potassium permanganate dissolve in water)

REASON- Compound do not shows light color.

a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.

b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c.) Assertion is true but Reason is false.

d.) Assertion is false but Reason is true

Question 21 of 23

22. ASSERTION-Every particle of matter floats on air.
REASON-Every particle of matter held together by kinetic energy.

a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.

b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c.) Assertion is true but Reason is false.

d.) Assertion is false but Reason is true

Question 22 of 23

23. ASSERTION-The matter around us exists in three different states solid, liquid, gas
REASON-These states arise due to the variation in characteristics of the particle of matter.

a.) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.

b.) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.

c.) Assertion is true but Reason is false.

d.) Assertion is false but Reason is true

Question 23 of 23

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