Heat & Thermodynamics MCQs with Answers

In Fahrenheit scale the boiling point of water is ?

• A.212°F
• B.100°F
• C.180°F
• D.32°F

Transfer of heat from hot surrounding to cold refrigerator is an example of ?

• A.Spontaneous reaction
• B.Non spontaneous reaction
• C.Exothermic reaction
• D.Endothermic reaction

The gas law in which the pressure is kept constant is known as ?

• A.Boyle's Law
• B.Gay-Lussac's Law
• C.Avogadro's Law
• D.Charles' Law

Thermal energy can be transferred by ?

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

The boiling point of water decreases at higher altitudes is due to

• A.Low atmospheric pressure
• B.High atmospheric pressure
• C.Low temperature
• D.High humidity

When we heat a substance, the energy associated with its atoms or molecules ?

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

In order to boil water at 110°C, external pressure should be _?

• A.760 - 1200 torr
• B.Less than 760 torr
• C.Exactly 760 torr
• D.Greater than 1200 torr

In gas and liquid, temperature is a measure of _?

• A.Rotational kinetic energy
• B.Translational kinetic energy
• C.Vibrational kinetic energy
• D.Potential energy

In reversible adiabatic process the entropy change is _.

• A.Zero
• B.Maximum
• C.Minimum
• D.Infinite

The specific heat capacity of brick is approximately:

• A.840 J/kg·K
• B.420 J/kg·K
• C.2100 J/kg·K
• D.380 J/kg·K