Physics Chapter 8 Class 9 MCQs Online Test

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:

Low freezing point

Uniform thermal expansion

Small heat capacity

All

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

Large specific heat of water

Less absorption of heat

Low temperature of water

Low specific heat of water

#3. Specific heat of _____ is maximum.

Ice

Water

Mercury

Copper

#4. The formula of specific heat is:

c = Δtm/ΔQ

c = m ΔQ/Δt

c = ΔQ/Δt

c = ΔQ Δt/m

#5. The specific heat of ice is:

2100 J/kgK

2300 J/kgK

2400 J/kgK

2200 J/kgK

#6. Specific heat of water is:

2500 J/kgK

1760 J/kgK

4200 J/kgK

800J/kgK

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

Copper

Water

Mercury

Ice

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

26°C

24°C

27°C

25°C

#9. Temperature of ice in freezer is:

0°C

-18°C

-15°C

-28°C

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

β=α

β=2α

β=3α

β=α/2

#11. Evaporation causes ______.

Warmness

Coolness

Cloudiness

Dryness

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

ΔQ = mCf ΔT

ΔQ = CHf

ΔQ = mCf

ΔQ = mHf

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

Aluminium

Steel

Gold

Brass

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

387

920

903

470

#15. Refrigerator is based on the principle of:

Sound

Mechanics

Light

Thermodynamics

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

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

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

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

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

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

4.2 x 10 power -5 K-1

2.4 x 10 power -5 K-1

6 x 10 power -5 K-1

7.2 x 10 power -5 K-1

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

J/kgK

J/gK

J/kg2K

KgK/J

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

T(k) = 273 + °C

T(k) = 373 - °C

T(k) = 273 + °F

T(k) = 373 + °C

#20. Water freezes at:

32°F

0°F

-273K

0K

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

21000 J/K

840 J/K

0.0011 J/K

5 J/K

#22. Unit of heat is:

Meter per second

Joule per second

Joule

Kelvin

#23. _____ of crocus is natural thermometer.

Root

Stem

Flower

Seed

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

Temperature

Thermal conductivity

Heat

Heat capacity

#25. Normal human body temperature is:

98.6°C

15°C

42°C

37°C

#26. Mercury freezes at:

-39°C

0°C

-357°C

-100°C

#27. The boiling point of lead is:

1750 °C

1752 °C

1750 °C

1753 °C

#28. Unit of heat capacity is:

JK

JK2

J/K

J/K2

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

1.9 x 10 power -6 K

1.9 x 10 power -7 K

1.9 x 10 power -5 K

1.9 x 10 power -8 K

#30. Which of the following affects evaporation?

Temperature

Wind

All

Surface area of liquid

#31. The boiling point of water is:

98°C

78°C

90°C

100°C

#32. The boiling point of gold is:

2660°C

2595°C

2777°C

2450°C

Previous

Finish