Heat & Thermodynamics MCQs with Answers

Electric fire alarm works on the principle of ?

• A.Expansion
• B.Contraction
• C.Conduction
• D.Radiation

The direct transfer of heat between molecules of objects in contact with each other is called?

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

In thermodynamics, which one of the following is not an intensive property?

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

A material through which heat energy can flow easily is called?

• A.Thermal Radiator
• B.Thermal Insulator
• C.Thermal Conductor
• D.Thermal Absorber

In Kelvin scale of temperature, the boiling point of water is marked as ?

• A.273 K
• B.100 K
• C.373 K
• D.212 K

Specific heat capacity is defined as:

• A.Heat required to raise temperature of unit mass by one degree
• B.Heat required to change state of unit mass at constant temperature
• C.Heat per unit volume per degree
• D.Total heat content of a substance

A refrigerator takes heat from ?

• A.High temperature and removes it to low temperature
• B.Low temperature and removes it to high temperature
• C.The surrounding air and releases it inside
• D.None of these

When salt is added to pure water, its boiling point?

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

Select the standard condition for temperature and pressure?

• A.14.7 psi and 0°C
• B.14.7 psi and 25°C
• C.1 atm and 25°C
• D.1 atm and 0°C

The process in which pressure remains constant is called ?

• A.Isochoric
• B.Isobaric
• C.Isothermal
• D.Adiabatic