Blog

Al-Huda Science Academy has designed Physics Chapter 8 Class 9 MCQs for board preparation. Most of the questions are from the previous board papers. These are helping material for all type of students. Must share to your fellows if helpful.

Time allocated to each question is 20 seconds.

Physics Chapter 8 Class 9 MCQs

 

Results

Congratulations….

You have secured more than 70% to pass the test.

Feel Free to Try Again….

You have secured less than 70% to pass the test.

Click Here to Test Again

#1. Mercury is used as thermometric material because it has:

All

Low freezing point

Uniform thermal expansion

Small heat capacity

#2. The boiling point of water is:

78°C

98°C

100°C

90°C

#3. Unit of heat is:

Kelvin

Joule per second

Joule

Meter per second

#4. The formula of specific heat is:

c = Δtm/ΔQ

c = ΔQ/Δt

c = m ΔQ/Δt

c = ΔQ Δt/m

#5. Temperature of ice in freezer is:

0°C

-18°C

-15°C

-28°C

#6. Evaporation causes ______.

Dryness

Warmness

Coolness

Cloudiness

#7. Specific heat of _____ is maximum.

Ice

Mercury

Copper

Water

#8. The value of coefficient of linear thermal expansion of brass is:

1.9 x 10 power -8 K

1.9 x 10 power -5 K

1.9 x 10 power -6 K

1.9 x 10 power -7 K

#9. Water freezes at:

32°F

0K

-273K

0°F

#10. Degree of hotness or coldness of the body is called:

Heat capacity

Heat

Temperature

Thermal conductivity

#11. Normal human body temperature is:

15°C

37°C

98.6°C

42°C

#12. The coefficient of volume thermal expansion of aluminium is:

2.4 x 10 power -5 K-1

6 x 10 power -5 K-1

4.2 x 10 power -5 K-1

7.2 x 10 power -5 K-1

#13. The boiling point of lead is:

1752 °C

1753 °C

1750 °C

1750 °C

#14. Mercury freezes at:

-357°C

0°C

-39°C

-100°C

#15. The coefficient of linear expansion and volume expansion are related by the equation:

β=2α

β=3α

β=α

β=α/2

#16. Heat capacity of 5kg of water having specific heat equals to 4200 J/kgK is:

840 J/K

5 J/K

21000 J/K

0.0011 J/K

#17. Refrigerator is based on the principle of:

Mechanics

Sound

Thermodynamics

Light

#18. On Celsius scale, the temperature 300K will be:

25°C

24°C

27°C

26°C

#19. The specific heat of ice is:

2100 J/kgK

2400 J/kgK

2300 J/kgK

2200 J/kgK

#20. _____ of crocus is natural thermometer.

Root

Seed

Stem

Flower

#21. Which of the following affects evaporation?

Surface area of liquid

Temperature

All

Wind

#22. Unit of heat capacity is:

J/K

JK2

J/K2

JK

#23. The formula of conversion from Celsius to Kelvin scale is:

T(k) = 373 - °C

T(k) = 273 + °C

T(k) = 273 + °F

T(k) = 373 + °C

#24. Which of the following material has large value of temperature coefficient of linear expansion?

Aluminium

Brass

Steel

Gold

#25. S.I. unit of specific heat is:

J/kgK

J/kg2K

J/gK

KgK/J

#26. What will be the value of β for a solid for which α has a value of 2 x 10power-5 K(power) -1?

2 x 10power-15 K(power) -1

8 x 10power-5 K(power) -1

6 x 10power-5 K(power) -1

2 x 10power-5 K(power) -1

#27. The formula of latent heat of fusion is:

ΔQ = mCf ΔT

ΔQ = CHf

ΔQ = mCf

ΔQ = mHf

#28. A large water reservoir keeps the temperature of nearby land moderate due to:

Low specific heat of water

Large specific heat of water

Low temperature of water

Less absorption of heat

#29. The boiling point of gold is:

2595°C

2450°C

2777°C

2660°C

#30. The value of specific heat of silver in J/kgK is:

387

470

920

903

#31. Which of the following material has large heat capacity:

Mercury

Copper

Water

Ice

#32. Specific heat of water is:

4200 J/kgK

1760 J/kgK

800J/kgK

2500 J/kgK

Previous

Finish