Home/MDCAT/MDCAT Thermodynamics Test Online

MDCAT Thermodynamics Test Online

Mustansar KhanLast Updated: May 26, 2025

Physics Thermodynamics MCQS Online Test

MDCAT Physics Thermodynamics Chapter Online Test

Total Questions:	49
Time Allowed:	25 Minutes
Total Marks:	49
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	MDCAT Entry Test Physics Online Test Interview Questions about Physics All Universities Entrance Test Recruitments Tests

Physics Thermodynamics Chapter Online Test

Please wait...

Page 1 of 2

Uncategorized

1. What is specific heat?

Heat required for melting

Heat required to change state

Heat required to raise temperature of 1 kg by 1 K

Heat required to increase pressure

2. What does an isothermal process imply?

Constant temperature

Constant entropy

Constant pressure

Constant volume

3. Which of the following has units J/mol·K?

Pressure

Internal energy

Specific heat

Molar specific heat

4. Which of the following is an extensive property?

Pressure

Temperature

Internal energy

Specific heat

5. Which of the following processes occurs at constant volume?

Isochoric

Adiabatic

Isothermal

Isobaric

6. When a system performs positive work, it means:

Volume decreases

Pressure increases

Energy is added to the system

Energy is released by the system

7. Which of the following is a state function?

Heat

Path

Internal energy

Work

8. What happens to the internal energy in an adiabatic expansion?

Becomes zero

Decreases

Doubles

Increases

9. Which process occurs without any change in heat content?

Isochoric

Isobaric

Isothermal

Adiabatic

10. When a gas expands doing work and absorbs heat, its internal energy:

Remains the same

Becomes zero

Increases

Decreases

11. What happens to internal energy during an isothermal expansion?

Becomes negative

Decreases

Increases

Remains constant

12. Which of the following expresses work done at constant pressure?

W = ΔU

W = Q

W = PΔV

W = PV

13. What is the heat capacity of a substance?

Heat required to raise temperature by 1°C

Mass × temperature

Heat required to change state

Volume × density

14. In the equation ΔU = Q – W, what does a positive W indicate?

Work done on the system

No work

Heat absorbed

Work done by the system

15. In an adiabatic process, if work is positive:

Internal energy remains unchanged

Internal energy increases

Temperature remains constant

Internal energy decreases

16. Which law states that energy can neither be created nor destroyed?

Third law of thermodynamics

Zeroth law of thermodynamics

First law of thermodynamics

Second law of thermodynamics

17. Which of the following does not change during an isothermal process?

Temperature

Heat

Pressure

Volume

18. What does the term “internal energy” refer to?

Total kinetic and potential energy of molecules

Heat energy only

Energy due to external force

Energy required for phase change

19. During isobaric expansion of gas:

Pressure increases

Volume remains constant

Pressure remains constant

No work is done

20. Which of the following has the highest specific heat?

Mercury

Copper

Water

Iron

21. In which process is ΔU = Q?

Isochoric

Isobaric

Adiabatic

Isothermal

22. If Q = 200 J and W = 50 J, what is the change in internal energy?

250 J

100 J

300 J

150 J

23. Molar specific heat is the amount of heat required to:

Raise the temperature of 1 mole by 1°C

Freeze one mole of liquid

Boil one mole of water

Melt one mole of substance

24. Which physical quantity is represented by the slope of a temperature vs. heat graph during heating?

Internal energy

Latent heat

Specific heat

Pressure

25. Which equation represents the first law of thermodynamics?

Q = mcΔT

ΔU = Q – W

F = ma

PV = nRT

Page 2 of 2

26. If no heat is exchanged with the surroundings, the process is called:

Isobaric

Adiabatic

Isothermal

Isochoric

27. What is the unit of specific heat in SI?

J/kg

J/mol·K

J/kg·K

J/K

28. What is the heat required to raise the temperature of 5 kg of a substance with specific heat 200 J/kg·K by 3 K?

9000 J

600 J

3000 J

1000 J

29. Which gas law is used in the derivation of the first law of thermodynamics?

Dalton’s law

Charles’s law

Boyle’s law

Ideal gas law

30. The heat required to raise the temperature of one mole of a substance by one Kelvin is:

Latent heat

Specific heat

Molar heat capacity

Thermal conductivity

31. The total energy of an isolated system:

Becomes zero

Remains constant

Increases

Decreases

32. When a gas is compressed, work is:

Zero

Done by the gas

Done on the gas

Infinite

33. In the first law of thermodynamics, the internal energy change is equal to:

Heat added minus work done

Heat added to the system

Work done by the system

Pressure × Volume

34. Which of the following is not a path function?

Heat

Work

Internal energy

All of the above

35. Which thermodynamic process has both Q and W equal to zero?

Isochoric

Isothermal

Free expansion

Adiabatic

36. The first law of thermodynamics violates:

Conservation of momentum

Conservation of energy

Creation of energy

Destruction of mass

37. Which instrument is used to measure heat?

Barometer

Voltmeter

Calorimeter

Thermometer

38. What does a negative ΔU indicate?

Temperature increases

Energy is absorbed

System has gained energy

Internal energy has decreased

39. Which process shows ΔU = 0?

Isochoric

Adiabatic

Isobaric

Isothermal

40. What is the value of specific heat of water?

420 J/kg·K

0.42 J/kg·K

4200 J/kg·K

4.2 J/kg·K

41. Which of the following statements is true about heat?

It is stored in the body

It flows from hot to cold

It flows from cold to hot

It is a form of matter

42. What is the heat added in an adiabatic process?

Infinite

Zero

Equal to work done

Constant

43. When W = Q in the first law equation, what is ΔU?

Maximum

Equal to heat

Minimum

Zero

44. Specific heat is lowest for:

Water

Iron

Aluminum

Lead

45. Which law defines the mechanical equivalent of heat?

First law of thermodynamics

Boyle’s law

Law of conservation of momentum

Newton's law

46. The temperature of a gas is directly proportional to:

Volume

Internal energy

Pressure only

Mass

47. In a system where no heat is added and work is done on the gas, internal energy:

Decreases

Remains same

Becomes zero

Increases

48. The SI unit of heat is:

Kelvin

Joule

Watt

Calorie

49. Which of the following has the highest molar specific heat at constant pressure?

Metals

Water

Diatomic gases

Monoatomic gases

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

MDCAT Chemistry Gases Test Online
MDCAT Chemistry Industrial Chemistry Test Online
MDCAT Chemistry Aldehydes and Ketones Test Online
MDCAT Physics Alternating Current Test Online
MDCAT Physics Fluid Dynamics Test Online
MDCAT Physics Vactors And Equilibrium Test Online
MDCAT Chemistry Alcohols And Phenols Test Online
MDCAT Chemistry Alkyl Halides Test Online
MDCAT Biology Biotechnology Online Test
MDCAT Biology Homeostasis Online Test

Mustansar KhanLast Updated: May 26, 2025

Facebook Twitter Reddit WhatsApp Share via Email Print

MDCAT Thermodynamics Test Online

Physics Thermodynamics MCQS Online Test

MDCAT Physics Thermodynamics Chapter Online Test

Physics Thermodynamics Chapter Online Test

Uncategorized

You Might Also Like

Mustansar Khan

Leave a Reply Cancel reply

Physics Thermodynamics MCQS Online Test

MDCAT Physics Thermodynamics Chapter Online Test

Physics Thermodynamics Chapter Online Test

Uncategorized

You Might Also Like

Mustansar Khan

Your Related

MDCAT Biology Bioenergetics Test Online

KMDC Karachi Entry Test Preparation Online

MDCAT Chemistry Reaction Kinetics Test Online

MDCAT Chemistry Industrial Chemistry Test Online

MDCAT Chemistry Aldehydes and Ketones Test Online

MDCAT English Synonyms Test 4 Online

Leave a Reply Cancel reply