Chemistry Class 9 Chapter 5 Important MCQs Federal Board

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Chemistry Class 9 Chapter 5 Important MCQs Federal Board 2023

Chapter 5 Chemistry Class 9 fbise 2023

Physical States of Matter mcqs

1. The intermixing of _____ gases is known as diffusion.

A. Reacting

B . Non Reacting

C. Noble

D. Both A and C

ANSWER: B . Non reacting

2. In diffusion the movement of particles is towards_____concentration.

A. Lower

B. Higher

C. Same

D. All concentration

ANSWER: A. Lower

Difference between Diffusion and Effusion

3. Molecules of gases do not have any_____

Chemistry Class 9 Chapter 5 Important MCQs Federal Board 2023

Chapter 5 Chemistry Class 9 fbise 2023

Physical States of Matter mcqs

1. The intermixing of _____ gases is known as diffusion.

2. In diffusion the movement of particles is towards_____concentration.

3. Molecules of gases do not have any_____

4. Effusion is the leaking of gas through a_____ hole.

5. In effusion gas molecules____ collide with each other.

6. 1 atmospheric pressure is equal to____ torr.

7. 760 torr is equal to____ mm of Hg

8. A gas exerts pressure on____ of the container.

9. ____ per unit area is known as pressure.

10. 1 atm = ____ kPa

11. The system International unit of Pressure is _____.

12. Gases are____ compressible.

13. By applying pressure distances between gas molecules _____.

14. On applying pressure gas volume _____.

15. Mass divided by____ is known as density.

16. When a gas is cooled its density _____

17. According to KMT gas molecules are in constant random _____.

18. The absolute temperature is measured in _____.

19. There are____ empty spaces between molecules of a gas.

20. Increase in temperature causes_____ in energy of gas molecules.

21. Boyle’s law is applicable only at_____ temperature

22. The relation between pressure and volume is given by _____ law.

23. Pressure varies___ with volume for gases.

24.____ is used as an anesthetic gas

25. The relation between temperature and volume is given by _____ law.

26. Gay-Lussac law is the other name of _____ law.

27. In Charle’s law ___ is a constant quantity.

28.____ gas is used as a refrigerant.

29. The temperature of gas varies____ with its volume.

30. Evaporation occurs at ____ temperature.

31. The interchange of liquid into vapours is known as ____.

31. Evaporation is a ___ phenomenon.

32. Evaporation is a ______ process

33. Vapour pressure varies ____ with temperature.

34. The pressure exerted by vapours upon ______ at equilibrium is known as vapour pressure.

35. The temperature at which vapour pressure becomes equal to atmospheric pressure is ____ point.

36. The boiling point of water is ___ 0C

37. Boiling point of water at Mount Everest is ___ 0c

38. Melting and freezing points of a solid are ___.

39. Conversion of a solid into vapours directly is known as _____.

40. Melting point of NaCl is ___ 0C

41. Regular 3d structure is present in ____ solids.

42. The solids which lack ordered arrangements are ____ solids

43. Glass is an example of ____ solids.

44. The different forms of the element in the same physical form are known as ____.

45. Carbon exists in ___ allotropic forms.

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36. The boiling point of water is ___ ⁰C

37. Boiling point of water at Mount Everest is ___ ⁰c

40. Melting point of NaCl is ___ ⁰C