Punjab 9th Class Physics Chapter 9 Transfer of Heat Mcqs Test Online Solved With Right Answers

Question 1 of 9

Physics

1. In solids, heat is transferred by:

Absorption

Radiation

Convection

Conduction

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Question 2 of 9

2. Land breeze blows from

Sea to land during night

Land to sea during the day

Sea to land during the day

Land to sea during night

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Question 3 of 9

3. Rooms are heated using gas heaters by:

Convection only

Radiation only

Conduction only

Convection and radiation

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Question 4 of 9

4. Metals are good conductors of heat due to the:

Rapid vibrations of their atoms

Free electrons

Big size of their molecules

Small size of their molecules

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Question 5 of 9

5. False ceiling is done to:

Cool the room

Keep the roof clean

Lower the height of ceiling

Insulate the ceiling

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Question 6 of 9

6. Convection of heat is the process of heat transfer due to the:

Downward movement of molecules

Free movement of molecules

Random motion of molecules

Upward movement of molecules

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Question 7 of 9

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

Remains the same

Becomes half

Becomes one fourth

Becomes double

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Question 8 of 9

8. Which of the following is a good radiator of heat?

A green coloured surface

A white surface

A dull black surface

A shining silvered surface

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Question 9 of 9

9. In gases, heat is mainly transferred by

Molecular collision

Conduction

Convection

Radiation

Question 9 of 9

Punjab 9th Class Physics Chapter 9 Transfer of Heat Mcqs Test Online

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Punjab 9th Class Physics Chapter 9 Transfer of Heat Mcqs Test Online

Physics Chapter 9 Transfer of Heat Mcqs Test Online Punjab 9th Class

Physics

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Test By Subject	Punjab
Test By Topics	9th Class Physics