Heat & Thermodynamics MCQs with Answers

Expanding of metal on heating is a change.

• A.Nuclear
• B.Chemical
• C.Biological
• D.Physical

In an isobaric process, there is no change in _?

• A.Volume
• B.Pressure
• C.Temperature
• D.Internal Energy

What is the heat transfer when internal energy decreases by 200 J and the work done by the system is 50 J?

• A.250 J
• B.150 J
• C.100 J
• D.50 J

Which property of water maintains constant temperature of a water body?

• A.Specific heat
• B.Latent heat of fusion
• C.Thermal conductivity
• D.Boiling point

Amount of energy required to raise the temperature of a substance by 1°C is called as _?

• A.Specific heat capacity
• B.Latent heat
• C.Heat capacity
• D.Thermal conductivity

The ratio of Cp/Cv for a diatomic gas is equal to ?

• A.1.66
• B.1.4
• C.1.33
• D.1.28

Heat detector is used for finding of:

• A.Pressure of Gases
• B.Humidity in Air
• C.Temperature of Fire
• D.Speed of Wind

As temperature increases, solubility of oxygen and carbon dioxide ?

• A.Decreases
• B.Increases
• C.Remains unchanged
• D.First increases then decreases

What is the driving force in energy transfer?

• A.Pressure
• B.Temperature
• C.Volume
• D.Density

SI unit of measuring enthalpy is _?

• A.Joule
• B.Pascal
• C.Newton
• D.Watt