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**Title:**Properties of Matter

**Chapter: 7**th Chapter of 9th Class Physics

**FileSize**: 4.76 MB

**FileType**: PDF

**Pages**: 27

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### Table of Content - Quick Links

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KIPS MCQs OF CH# 7 FOR 9TH CLASS PHYSICS

### KIPS SHORT QUESTIONS OF CH# 7

**Short Questions**

1. What is Kinetic molecular theory? Write down its postulates.

2. What is plasma?

3. What do you know about density?

4. Define pressure and write down its unit.

5. Define pressure in liquids.

6. State Pascal's Law.

7. Explain the braking system of the vehicles.

8. State Archimedes Principle

9. Define principle of floatation.

10. What is atmospheric pressure?

11. Why mercury is used in barometer instead of water?

12. What weather changes can be expected due to the decrease of atmospheric pressure?

13. What is Elasticity'?

14. What is stress?

15. What is strain'?

16. Hooke's Law

17. Define Young's Modulus.

18. What is elastic Limit'?

19. What are the elastic materials? Give some examples.

20. How property of elasticity is used in our body?

21. Prove that the SI unit of Young's modulus is Pascal or Nm·2.

22. Prove that liquid pressure does not depend upon the mass of the liquids.

23. Under what condition the object floats in water?

24. Prove that P=pgh

25. Write any three applications of Pascal's law in our daily life.

26. When an inflated balloon is heated it bursts. Why?

27. Under what condition the object sinks in water?

**The Short Questions With Answers in the Below Images**

### KIPS LONG QUESTIONS OF CH# 7

**Long Questions**

1. Explain different states of matter on the basis of kinetic molecular theory.

2. What is atmospheric pressure? And explain atmospheric pressure with the help of an experiment.

3. Which device is used to measure the atmospheric pressure? Explain the measurement of atmospheric pressure by using a barometer.

4. Write a note on variation in atmospheric pressure.

5. Define pressure in liquids. Derive its mathematical formula.

6. State Pascal's Law. Write down.the application of Pascal's.

7. Explain the braking system of the vehicles.

8. State and explain Archimedes Principle.

9. How density of an object can be found by Archimedes principle?

10. Explain the Principle of Floatation.

11. State and explain the Hocke's Law.

12. Define Young's Modulus and derive its mathematical formula

**Long Questions with Answers in the Below Images**

### KIPS TEXTBOOK EXCERCISE OF CH# 7

**MCQs**

1. In which of the following state, molecules do not leave their position:

2. Which of the substances is the lightest one?

3. SI unit of pressure is Pascal, which is equal to?

4. What should be the approximate length of a glass tube to construct a water barometer?

5. According to Archimedes, upthrust is equal to:

6. The density of a substance can.be found with the help of

7. According to Hooke's law:

**Short Questions**

1. How kinetic molecular model is helpful in differentiating various states of matter?

2. Does there exist a fourth state of matter? What is that?

3. What is meant by a density? What is its SI unit?

4. Can we use a hydrometer to measure the density of milk?

5. Define the term pressure.

6. Show that atmosphere exerts pressure.

7. It is easy to remove air from a. balloon but it is very difficult to remove air from a

glass.Why?

8. What is barometer?

9. Why water is not suitable to be used in a barometer?

10. What makes a sucker pressed on smooth wall sticks to it?

11. What does the atmospheric pressure vary with height?

12. What does it mean when the attmospheric pressure at place fall suddenly?

13. What changes are expected in weather if the barometer reading shows a sudden

increase?

14. State Pascal's law

15. Explain the working of the hydaulic press.

16. What is meant by elasticity?

17. State Archimedes principle'?

18. What is up thrust'? Explain the principle of floatation.

19. Explain how a submarine moves up the water surface and down into the water.

20. Why does a piece of stone sink in water but a ship with a huge weights float?

21. What is Hooke's law? What is meant by elastic limit?

22. Take a rubber band. Construct a balance of you own using a rubber band. Check its accuracy by weighing various objects. **The MCQs, and Short Questions of TextBook With Answers In the Below Images**

### KIPS SOLVED NUMERICALS OF CH# 7

**Numerical**

1. A wooden block measuring 40 cm x 10 cm x 5 cm has a mass of 850 g. Find the density of the wood.

2. How much would be the voh1me of the ice formed by freezing 1 liter of water?

3. Calculate the volume of the following objects.

i) An iron sphere of mass S kg, the density of iron is 8200 kgm·3

ii) 200 g of lead shot having density 11300 kgm·3

iii) A gold bar of mass 0.2 kg. the density of gold is 19300 kgm-3

4. The density of air is 1.3 kgm·3. Find the mass of a.ir in the room measuring 8m x 5 m x 4 m.5. A student passes her palm by her thumb with a force of 75 N. How much would be the pressure under her thumb having contact area l.5 cm2?

6. The head of the pin is a square of side 10 mm. find the pressure on it due to a force

of 20 N.

7. A uniform rectangular block of wood 20 cm x 7.5 cm x 7.5 cm and of mass 1000 g stands on a horizontal surface with its longest edge vertical. Find

8. A cube of glass of 5 cm side and mass 306 g, bas a cavity inside it. If the density of

the glass is 2.5.5 gcm·3• Find the_ volume of.the cavity.

9. An object has weight 18 N in air. Its weight is_ found to be 11.4 N when immersed in water. Calculate its density. Can you guess the material of the object?

10. A solid block of wood of density 0.6 gcm·3 weighs 3.06 Nin air. Determine:

(i) Volume of the block

(tt) The volume of block immersed when placed freely in liquid of density 0.9 gcm-3.

**The Numerical With Solution in the Below Images**

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