Heat & Thermodynamics MCQs with Answers

Specific heat capacity is the property of a substance or material per unit ?

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

A process in which liquid changes into gas without boiling is called?

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

During an isothermal expansion of an ideal gas, which of the following statement is true?

• A.The temperature of the gas remains constant
• B.The internal energy of the gas increases
• C.The pressure of the gas remains constant
• D.No heat is exchanged with the surroundings

What causes matter to change state?

• A.Magnetic energy
• B.Light energy
• C.Sound energy
• D.Heat energy

What is the mathematical statement of the first law of thermodynamics?

• A.W = q − ΔE
• B.ΔE = q − W
• C.q = ΔE × W
• D.ΔE = q + W

Past Paper MCQ

By what mechanism does scent spread all over the room if the lid is opened?

• A.Osmosis
• B.Diffusion
• C.Effusion
• D.Convection

With the increase in temperature, heat will be?

• A.First increase then decrease
• B.Decreased
• C.Remain same
• D.Increased

Car radiator is a component of every car which is used for?

• A.Heating the interior
• B.Cooling Engine
• C.Filtering fuel
• D.Lubricating parts

In an isothermal process:

• A.Change in internal energy is zero
• B.Change in temperature is maximum
• C.Heat is neither absorbed nor released
• D.Pressure remains constant throughout

What is the value of 89.0°C on the Kelvin scale?

• A.342 K
• B.352 K
• C.372 K
• D.362 K