Heat & Thermodynamics MCQs with Answers

Solid can be converted into liquid by?

• A.Heating
• B.Cooling
• C.Freezing
• D.Condensation

Past Paper MCQ

False ceiling (also called a drop ceiling or suspended ceiling) is done to?

• A.Improve insulation and cooling of the room
• B.Increase the structural strength of the building
• C.Prevent termite infestation
• D.Enhance the foundation stability

If the work done on a system is 500 J and 200 J of heat is lost, what is the gain in internal energy?

• A.700 J
• B.500 J
• C.200 J
• D.300 J

The process of conversion of liquid water into vapour is called _?

• A.Condensation
• B.Evaporation
• C.Sublimation
• D.Precipitation

The melting point of pure ice at Standard Temperature and Pressure (STP) is?

• A.-4°C
• B.4°C
• C.0°C
• D.100°C

At 0 K, which of the following properties of gas will be zero?

• A.Kinetic energy
• B.Potential energy
• C.Density
• D.Volume

-40 degrees Celsius is equal to ?

• A.40 degree Fahrenheit
• B.-40 Kelvin
• C.-40 degree Fahrenheit
• D.0 degree Fahrenheit

A well stopped thermos flask containing some ice cubes is an example of ?

• A.Open system
• B.Closed system
• C.Isolated system
• D.Adiabatic system

Enthalpy is the of a system at constant pressure

• A.Heat content
• B.Internal energy
• C.Entropy
• D.Free energy

In the isothermal process, there is no change in:

• A.Internal energy
• B.Temperature
• C.Both A and B
• D.Pressure