Home/Tests/Test/Punjab 9th Class Physics Model Paper 7 MCQs Test Online

Punjab 9th Class Physics Model Paper 7 MCQs Test Online

Question 1 of 36

Physics

1. False ceiling is done to:

1.cool the room

2. keep the roof clean

3. insulate the ceiling

4. lower the height of ceiling

Question 1 of 36

Question 2 of 36

2. Thermal conductivity of rubber is _________ Wm⁻¹K⁻¹.

1. 105

2. 430

3. 400

4.245

Question 2 of 36

Question 3 of 36

3. Mercury is used as thermometric material because it has:

1.all the given properties

2.uniform thermal expansion

3.small heat capacity

4.low freezing point

Question 3 of 36

Question 4 of 36

4. Heat transfers through fluids by the method called:

1. radiation

2.convection

3. absorption

4.conduction

Question 4 of 36

Question 5 of 36

5. On Celsius scale, 50°C is equal on Fahrenheit scale to:

1.90°F

2.102°F

3.122°F

4.100°F

Question 5 of 36

Question 6 of 36

6. Rooms are heated using gas heaters by:

1. radiation only

2. convection and radiation

3. convection only

4.conduction only both

Question 6 of 36

Question 7 of 36

7. In symbols, co-efficient of volume expansion is defined as:

1.β= ∆V/V₀∆T

2.β= ∆V/∆T

3. β= ∆T/∆V

4. β= ∆T/V₀∆V

Question 7 of 36

Question 8 of 36

8. Length of a rod is L₀ on temperature T₀. After heating up to temperature T, its length L becomes:

1.L = L₀(1 + α∆T)

2.L = L₀(1 + ∆T)

3.L = L₀(1 – α∆T)

4.L = L₀(1 – ∆T)

Question 8 of 36

Question 9 of 36

9. What happens to the thermal conductivity of a wall if its thickness is doubled?

1.becomes double

2.becomes half

3.remains the same

4. becomes one fourth

Question 9 of 36

Question 10 of 36

10. In solids, heat is transferred by:

1.conduction

2.convection

3.radiation

4.absorption

Question 10 of 36

Question 11 of 36

11. Thermal conductivity of silver is:

1. 0.59 Wm⁻¹K⁻¹

2. 0.08 Wm⁻¹K⁻¹

3.0.2 Wm⁻¹K⁻¹

4. 1.7 Wm⁻¹K⁻¹

Question 11 of 36

Question 12 of 36

12. If a liquid of mass ‘m’ requires thermal energy ‘∆Qv’ to completely change into gas at its boiling point without any change in its temperature, then its latent heat of vaporization can be calculated as following:

1.Hv = m/∆Qv

2.Hv=cm∆Qv

3.Hv = ∆Qv/m

4.Hv = m∆Qv

Question 12 of 36

Question 13 of 36

13. Which gas is used in spite of Freon gas in refrigerator?

1.CO₂

2.H₂

3.NH₃

4.N₂

Question 13 of 36

Question 14 of 36

14. In gases, heat is mainly transferred by:

1.conduction

2. molecular collision

3. convection

4. radiation

Question 14 of 36

Question 15 of 36

15. Water freezer at:

1.-273K

2.0K

3.32°F

4. 0°F

Question 15 of 36

Question 16 of 36

16. Bimetallic strip works on the principle of:

1. contraction of metals

2. both A and B

3. unequal expansion of metals

4.expansion of metals

Question 16 of 36

Question 17 of 36

17. Reason of glider to remain in air is:

1.radiation

2.power

3.convection

4.conduction

Question 17 of 36

Question 18 of 36

18. If ‘m’ and change in its specific heat, then its heat capacity is given by:

1.mc²

2.m/c

3.mc

4.c/m

Question 18 of 36

Question 19 of 36

19. If the mass of a body is ‘m’ and change in its temperature is ∆T, then the heat absorbed or released is given by:

1.∆Q = cm∆T²

2.∆Q = m∆T

3.∆Q = 2c∆T

4.∆Q = cm∆T

Question 19 of 36

Question 20 of 36

20. Example of a bad conductor is:

1. wool

2. graphite

3. iron

4. gold

Question 20 of 36

Question 21 of 36

21. Which of the following effects evaporation?

1.surface area of the liquid

2.all of these

3.air

4.temperature

Question 21 of 36

Question 22 of 36

22. Which surface is best reflector of heat?

1.shining silvered surface

2.dull black surface

3.white surface

4.coloured surface

Question 22 of 36

Question 23 of 36

23. Normal human body temperature is:

1.15°F

2.38°F

3.98.6°F

4.37°F

Question 23 of 36

Question 24 of 36

24. Unit of specific heat capacity in SI system is:

1.JkgK

2.Jkg⁻¹ K⁻¹

3.J⁻¹kg⁻¹ K⁻¹

4.JkgK⁻¹

Question 24 of 36

Question 25 of 36

25. Which process produces cooling effect?

1.freezing

2.condensation

3. evaporation

4. boiling

Question 25 of 36

Question 26 of 36

26. Which of the following material has large specific heat?

1.Copper

2.mercury

3.water

4.ice

Question 26 of 36

Question 27 of 36

27. Temperature of ice in freezer is:

1.– 18°C

2.– 28°C

3.0 °C

4.– 8°C

Question 27 of 36

Question 28 of 36

28. The specific heat of water is:

1.2100 Jkg⁻¹ K⁻¹

2.4200 Jkg⁻¹ K⁻¹

3.2500 Jkg⁻¹ K⁻¹

4.2010 Jkg⁻¹ K⁻¹

Question 28 of 36

Question 29 of 36

29. Complete the equation T(K) = ___________.

1.273 + F

2.273 + C

3.273 – F

4.273 – C

Question 29 of 36

Question 30 of 36

30. The ways by which transfer of heat takes place are:

1. 2

2.1

3. 4

4.3

Question 30 of 36

Question 31 of 36

31. Latent heat of fusion of 1 kg of ace at 0°C is:

1.33.6 x 10⁵Jkg⁻¹

2.3.36 x 10³Jkg⁻¹

3.336 x 10⁵Jkg⁻¹

4.3.36 x 10⁵Jkg⁻¹

Question 31 of 36

Question 32 of 36

32. Absolute zero is equal to:

1.– 273°C

2.100 °C

3.100 K

4.0°C

Question 32 of 36

Question 33 of 36

33. Specific heat of water is how many times greater than that of dry soil?

1.four times

2.three times

3.two times

4.five times

Question 33 of 36

Question 34 of 36

34. Celsius temperature is converted into Fahrenheit temperature using the formula:

1.F = 1.8 C + 32

2.F = 1.4 C – 32

3.F = 1.8 C – 32

4.F = 1.4 C + 32

Question 34 of 36

Question 35 of 36

35. The specific heat of water is:

1.2500 Jkg⁻¹K⁻¹

2.1760Jkg⁻¹K⁻¹

3.4200 Jkg⁻¹K⁻¹

4.800 Jkg⁻¹ K⁻¹

Question 35 of 36

Question 36 of 36

36. Specific heat of iron in joules per kilogram per Kelvin is:

1.903.0

2.470.0

3.387.0

4.920.0

Question 36 of 36

Test By Subject	Punjab
Test By Topics	9th Class Physics

You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.

Other Related test

Punjab 9th Class Computer Science Chapter 1 Fundamentals of Computer Mcqs Test Online
Punjab 11th Class Chemistry Theories of Covalent Bonding and Shapes of Molecules Mcqs Test Online
Punjab 9th Class Math Chapter 7 Linear Equations & Inequalities Mcqs Test Online
Punjab 11th Class English Fly Away Mcqs Test Online
Punjab 9th Class Urdu Model Paper 5 Mcqs Test Online
Punjab 11th Class Biology Chapter 6 Kingdom Prokaryotae of Life Mcqs Test Online
Punjab 10th Class Physics Chapter 5 Current Electricity Mcqs Test Online
Punjab 10th Class Math Chapter 8 Projection of Sides of a Triangle MCQs Test Online
Punjab 12th Class English Sir Alexander Fleming Chapter 13 MCQs Test Online
Punjab 12th Class Computer Chapter 9 Introduction to Access Database Mcqs Test Online

Punjab 9th Class Physics Model Paper 7 MCQs Test Online

Test Name

Subject

Test Type

Punjab 9th Class Physics Model Paper 7 MCQs Test Online