Heat & Thermodynamics MCQs with Answers

Past Paper MCQ

The most suitable thermometer for measuring the boiling point of water is:

• A.Alcohol thermometer
• B.Clinical thermometer
• C.Mercury thermometer
• D.Digital thermometer

What happens when water solidifies as ice on cooling from 4°C to 0°C?

• A.Its volume increases and density decreases
• B.Its volume decreases and density increases
• C.Both volume and density remain unchanged
• D.Its volume decreases and density decreases

In the equation PV = nRT, the constant of proportionality R is known as _?

• A.Boltzmann Constant
• B.Universal Gas Constant
• C.Planck's Constant
• D.Stefan-Boltzmann Constant

The phenomenon of land and sea breeze is a result of _?

• A.Conduction
• B.Convection
• C.Radiation
• D.None of these

The SI Unit of Heat is _?

• A.Watt
• B.Calorie
• C.Kelvin
• D.Joule

Tea cools faster in a?

• A.Steel cup
• B.Glass cup
• C.Plastic cup
• D.Ceramic cup

Refrigerator works on the phenomenon of of heat transfer.

• A.Conduction
• B.Convection
• C.Radiation
• D.All of these

When ice cream is melting down, what type of energy is decreasing in it?

• A.Thermal energy
• B.Kinetic energy
• C.Chemical energy
• D.Potential energy

In a liquid, some energetic molecules break free from the surface even when the liquid is too cold for bubbles to form. What is the name of this process?

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

The heating and cooking of food evenly by microwave oven is an example of?

• A.Conduction
• B.Convection
• C.Resonance
• D.Radiation