Heat & Thermodynamics MCQs with Answers

On heating, the particles in ice cubes gain energy, move faster and change to liquid water. This process is called?

• A.Melting
• B.Boiling
• C.Condensation
• D.Sublimation

Most liquids expand when heated and contract when cooled. However, one liquid behaves differently, the name of the liquid is ?

• A.Mercury
• B.Alcohol
• C.Water
• D.Glycerin

In a mercury thermometer, what is the range of the linear scale that the mercury rises in the tube?

• A.35°C - 42°C
• B.32°C - 45°C
• C.30°C - 40°C
• D.36°C - 44°C

Celsius scale starts from?

• A.100°C
• B.32°C
• C.-273°C
• D.0°C

All of the following are bad conductors of heat except?

• A.Wood
• B.Rubber
• C.Copper
• D.Glass

Water has maximum density at _?

• A.0°C
• B.4°C
• C.100°C
• D.-4°C

The value of absolute zero in Celsius is:

• A.-373°C
• B.0°C
• C.-100°C
• D.-273°C

Why is mercury used as a thermometric fluid?

• A.It has a uniform expansion rate
• B.It is opaque and easily visible
• C.It does not stick to glass walls
• D.All of these

In a reversible process, the entropy of the system:

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

Past Paper MCQ

What is the escape of water molecules from surface called?

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