9th class Physics unit 7 MCQs
chapter 7 MCQs 9th Class Physics
Properties of Matter:
1. In which of the following state molecules do not leave their position?
a. Gas
b. Solid
c. Plasma
d. Liquid
2. Molecules are very close in body of:
a. Liquid
b. Plasma
c. Gases
d. Solid
3. The fourth state of matter is:
a. Gases
b. Solid
c. Plasma
d. Liquid
4. Which of the following substance is the lightest one?
a. Aluminum
b. Copper
c. Lead
d. Mercury
5. Mass of unit volume of anybody:
a. Force
b. Area
c. Surface
d. Density
7. Density = ……:
a. Weight/mass
b. Mass/volume
c. Mass/Mass
d. Weight/volume
8. Mercury is denser than water:
a. 13.6 times
b. 10 times
c. 10.5 times
d. 12.5 times
9. 5 liter is equal to:
a. 5 x 10-3cm-3
b. 5 x 10-3m3
c. 5 x 103 cm3
d. 5 x 103 m3
10. SI unit of pressure is Pascal, which is equal to:
a. 102 Nm-2
b. 104 Nm-2
c. 103 Nm-2
d. 1 Nm-2
11. One Pascal is equal to:
a. 102 Nm-2
b. 104 Nm-2
c. 12 Nm-2
d. 1 Nm-2
12. In SI, the unit of pressure is:
a. Nm
b. Nm-2
c. Kgm-3
d. Kgk-1
13. What should be the approximate length of a glass tube to construct a water barometer?
a. 2.5m
b. o.5m
c. 11m
d. 1m
14. At sea level, the atmospheric pressure is about:
a. 103,100 Pa
b. 101,300 Pa
c. 1000,130 Pa
d. 110,300 Pa
15. ……… works on Pascal’s law:
a. Hydraulic press
b. Screw gauge
c. Wedge
d. Vernier calipers
16. Hydraulic press works on:
a. Archimedes principle
b. Newton’s law
c. Hooke’s law
d. Pascal’s law
17. The density of a substance can be found with the help of:
a. Archimedes principle
b. Pascal’s law
c. Principle of floatation
d. Hooke’s law
18. According to Archimedes Principle, up thrust is equal to:
a. mass of displaced liquid
b. weight of displaced liquid
c. volume of displaced liquid
d. none of these
19. The Upthrust force of a liquid is equal to:
a. pgh
b. pgv
c. pgA
d. pgV
20. If ‘w’ is the weight of the body and ‘F’ is the up thrust of liquid, then the body will float if:
a. W = F
b. W > F
c. W< F
d. Both B and C
21. According to Hooke’s law:
a. Strain / stress = constant
b. Stress x strain = constant
c. Stress = strain
d. Stress / strain = constant
22. The ratio between stress and tensile strain s:
a. Young’s modulus
b. Elastic modulus
c. Shear modulus
d. Bulk modulus
23. Stress/Strain =………:
a. Archimedes’ Principle
b. Pascal’s law
c. Hooke’s law
d. Newton’s aw
24. SI unit of stress is:
a. Ns
b. Nm-2
c. Nm
d. Nm-1
25. Stress is equal to:
a. length area
b. force area
c. area length
d. area force
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