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Physics Notes for 9th Class Chapter-09

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Transfer of Heat:

The most interesting and important Subject Physics of 9th Class. Student want to know the important Questions and physics notes for 9th class , to prepare it according to BISE Punjab. We are providing the Solution of Student Problems.

Here is important MCQs for 9th Class, Physics Chapter # 09

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Physics Ch-09, 9th

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1 / 30

In solids, heat is transferred by_______

Radiation

Absorption

Convection

Conduction

2 / 30

Ventilation in our houses is only possible due to____________

Convection

All of these

Radiation

Conduction

3 / 30

Land breeze blows from____________

Land to Sea During the Day

Sea to Land During the Day

See the Land During Night

Land to Sea During Night

4 / 30

False Ceiling is done due to _____________

Keep the Roof Clean

Insulate the Ceiling

Lower the Height of Ceiling

Cool the Room

5 / 30

Transfer of heat by the actual movement of molecules____

All of these

Conduction

Radiation

Convection

6 / 30

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

Becomes Half

Becomes Double

Remains the Same

Becomes One Forth

7 / 30

Which of the following is best for insulation?

Fiber glass

Brass

Air

Glass

8 / 30

The gases in the Earth’s atmosphere, which causes the greenhouse effect_________

None of them

Both "Carbon dioxide" & "Water vapors"

Water vapors

Carbon dioxide

9 / 30

Colored surfaces are ___________ absorber.

Worst

Best

Poor

Good

10 / 30

Transmission of heat from one body to another body by the interaction of atoms and electrons____

Radiation

Convection

All of these

Conduction

11 / 30

Room are heated using gas heater by_________

Convection Only

Radiation Only

Conduction Only

Convection and Radiation

12 / 30

Water is a_____________

Insulator

Poor conductor

Good conductor

Super Conductor

13 / 30

There are _________methods of transmission of heat.

14 / 30

Heat from sun reaches us by _________

All of these

Radiation

Convection

Conduction

15 / 30

Unit of thermal conductivity is _____________

Wm^-1K^-1
Wm^-1K^-2
W m^-2 K^-1
W m² K^-1

Which Option is Correct ?

Option-2

Option-3

Option-4

Option-1

16 / 30

Metals are good conductor of heat due to the____________

small size of their molecules

big size of their molecules

rapid vibration of their atoms

Free Electrons

17 / 30

Feathers of the birds are__________

Semi-conductor

None of these

Insulators

Conductor

18 / 30

In gases, heat is mainly transferred by____________

Conduction

Molecular collision

radiation

Convection

19 / 30

Which one is/are the insulator (s)?

Cork

All of these

Cotton

Rubber

20 / 30

Land and sea breezes are due to___________

Conduction

Convection

Radiation

All of these

21 / 30

Movement of water on heating is shown by the crystal of_______

Sodium Chloride

None of these

Calcium Carbonate

Potassium Permanganate

22 / 30

Global warming in the world is due to_____

Greenhouse Effect

None of These

Land and Sea Breezes

Radiation

23 / 30

Styrofoam is a __________________

Conductor

None of These

Bad Conductor

Semi-conductor

24 / 30

Ice is an___________

Good Conductor

Perfect Conductor

None of these

Bad Conductor

25 / 30

Black surfaces are _________ emitter.

Poor

Worst

Best

Good

26 / 30

Transmission of heat by waves without affecting medium on its way__________

Convection

All of these

Conduction

Radiation

27 / 30

Convection of heat is the process of heat transfer due to the _________ of the molecules.

Upward Movement

Downward Movement

Random Motion

Free Movement

28 / 30

Geysers work on the principle of___________

Radiation

Convection

Conduction

All of these

29 / 30

Which of the following is a good radiator of heat?

A Green Colored Surface

A Dull Black Surface

A White Surface

A Shining Silvered Surface

30 / 30

Shinning silvered surfaces are __________ reflector.

Best

Good

Poor

Worst

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Result:

User Name	Start	Score
ghazala ehsan	08:35:39 Feb 08, 2025	86%
ghazala ehsan	08:28:30 Feb 08, 2025	36%
slimshady	14:13:17 Mar 18, 2024	76%
Fahim Ul Abbas	23:52:42 Feb 23, 2024	76%
Ayesha	22:28:31 Feb 13, 2024	70%
Zaib	01:45:53 Feb 12, 2024	86%
Lun	01:40:17 Feb 12, 2024	43%
mubeen ahmed	22:01:21 Feb 11, 2024	86%
Ahmad	10:51:54 Jan 30, 2024	80%
Ayesha shafaqat	07:15:15 Dec 11, 2023	56%
Annie	12:15:21 Dec 06, 2023	90%
Syed Muhammad Hassan	19:27:21 Nov 29, 2023	93%
Syed Muhammad Hassan	19:22:16 Nov 29, 2023	80%
Raju	19:04:05 Apr 18, 2023	66%
ffff	14:13:36 Feb 21, 2023	76%
Syeda amina	14:55:14 Feb 11, 2023	26%
Zainab	05:52:09 Jan 27, 2023	93%
Zainab	05:48:42 Jan 27, 2023	80%
Shuja Rehman	15:55:16 Jan 26, 2023	60%
M.Shawaiz	20:36:38 Dec 17, 2022	73%
Eman	18:45:00 Sep 20, 2022	50%
Faryal	12:59:22 May 14, 2022	66%
Amna	21:31:05 Apr 15, 2022	83%
Farwa	18:59:53 Apr 13, 2022	70%
Hassan	17:17:39 Aug 07, 2021	23%
Afzaal	15:05:29 Jul 29, 2021	33%

MCQs in PDF Format Chapter -09

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(Correct Answers has shown at front end of each question)

Physics Notes for Class 9th

if your are talking about the course material of Class 9th Physics Notes. eStudent.pk is providing some helpful content against each chapter of Physics Class 9 notes pdf downloadable of our book. For each chapter there are short questions, long question, multiple-choice questions, and numerical. Similarly, in the case of extra material, there are long questions, short questions, and multiple-choice questions. So, every student can check these notes and prepare for exams.

How did we prepare from these notes? any Student of 9th class should prepared all the long question of each chapter first and practiced all the numerical as well in good grip. Then he should skimmed through all the multiple-choice question and short questions of same chapter. That should be enough for him to prepare a chapter and secure good marks in exams. All reader should use this technique if you like this.