# Heat and Thermodynamics MCQs with Answers

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## Heat and Thermodynamics Online MCQs with Answers

The transfer of heat through direct contact between particles of matter is called:
a) Conduction
b) Convection
d) Conjunction

a) Conduction

The SI unit of heat is:
a) Kelvin
b) Joule
c) Watt
d) Newton

b) Joule

Which of the following is a poor conductor of heat?
a) Metal
b) Glass
c) Wood
d) Plastic

d) Plastic

The transfer of heat through the movement of fluids is called:
a) Conduction
b) Convection
d) Conversion

b) Convection

The process of converting a solid directly into a vapor without passing through the liquid state is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

c) Sublimation

The temperature at which a substance changes from a liquid to a solid state is called:
a) Melting point
b) Boiling point
c) Freezing point
d) Condensation point

c) Freezing point

The transfer of heat through electromagnetic waves is called:
a) Conduction
b) Convection
d) Reflection

The specific heat capacity of a substance is defined as the amount of heat required to raise the temperature of:
a) One gram of the substance by one degree Celsius
b) One kilogram of the substance by one degree Celsius
c) One gram of the substance by ten degrees Celsius
d) One kilogram of the substance by ten degrees Celsius

a) One gram of the substance by one degree Celsius

The transfer of heat energy by the movement of currents in a fluid is known as:
a) Conduction
b) Convection
d) Reflection

b) Convection

The second law of thermodynamics states that:
a) Heat always flows from a hot body to a cold body
b) The total energy of an isolated system remains constant
c) The entropy of a system always increases
d) The pressure of a gas is inversely proportional to its volume

c) The entropy of a system always increases

The unit of heat transfer is the same as the unit of:
a) Temperature
b) Energy
c) Mass
d) Volume

b) Energy

The process of converting a gas directly into a solid without passing through the liquid state is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

c) Sublimation

The process of converting a liquid into a gas at a temperature below its boiling point is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

b) Evaporation

The device used to measure temperature is called a:
a) Thermometer
b) Barometer
c) Hydrometer
d) Pyrometer

a) Thermometer

The principle of conservation of energy is also known as:
a) Boyle’s law
b) Pascal’s law
c) Archimedes’ principle
d) First law of thermodynamics

d) First law of thermodynamics

The lowest possible temperature in the universe is known as:
a) Absolute zero
b) Boiling point
c) Freezing point
d) Melting point

a) Absolute zero

The transfer of heat energy through the emission and absorption of infrared radiation is an example of:
a) Conduction
b) Convection
d) Reflection

The principle of calorimetry is based on the concept of:
a) Heat capacity
b) Specific heat capacity
c) Latent heat
d) Thermal equilibrium

d) Thermal equilibrium

The process of converting a gas into a liquid state is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

d) Condensation

The temperature scale where zero degrees represents the absence of molecular motion is the:
a) Celsius scale
b) Kelvin scale
c) Fahrenheit scale
d) Rankine scale

b) Kelvin scale

The transfer of heat through the vibration of particles in a solid is called:
a) Conduction
b) Convection
d) Reflection

a) Conduction

The specific heat capacity of water is:
a) 1 J/g°C
b) 4 J/g°C
c) 10 J/g°C
d) 100 J/g°C

b) 4 J/g°C

The amount of heat required to raise the temperature of a substance is directly proportional to its:
a) Volume
b) Density
c) Mass
d) Pressure

c) Mass

The temperature at which a substance changes from a solid to a liquid state is called:
a) Melting point
b) Boiling point
c) Freezing point
d) Condensation point

a) Melting point

The process of transferring heat by the circulation of a fluid is an example of:
a) Conduction
b) Convection
d) Reflection

b) Convection

The process of converting a gas into a liquid state without changing its temperature is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

d) Condensation

The total internal energy of a system is the sum of its:
a) Heat and temperature
b) Temperature and pressure
c) Kinetic energy and potential energy
d) Thermal equilibrium and heat capacity

c) Kinetic energy and potential energy

The boiling point of water at standard atmospheric pressure is:
a) 0°C
b) 100°C
c) 273°C
d) 373°C

b) 100°C

The transfer of heat energy through the emission and absorption of electromagnetic waves is an example of:
a) Conduction
b) Convection
d) Reflection

The expansion of a substance due to an increase in its temperature is known as:
a) Contraction
b) Compression
c) Dilatation
d) Expansion

d) Expansion

The relationship between the pressure and volume of a gas at constant temperature is described by:
a) Boyle’s law
b) Charles’s law
c) Gay-Lussac’s law

a) Boyle’s law

The transfer of heat energy by the movement of currents in a fluid is known as:
a) Conduction
b) Convection
d) Reflection

b) Convection

The heat required to change the phase of a substance without changing its temperature is called:
a) Heat capacity
b) Specific heat capacity
c) Latent heat
d) Thermal equilibrium

c) Latent heat

The process of converting a solid into a liquid state is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

a) Melting

The principle of conservation of energy states that energy cannot be:
a) Created
b) Destroyed
c) Transformed
d) Transferred

b) Destroyed

The temperature at which a substance changes from a liquid to a gas state is called:
a) Melting point
b) Boiling point
c) Freezing point
d) Condensation point

b) Boiling point

The process of converting a liquid into a gas at its boiling point is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

d) Condensation

The specific heat capacity of a substance depends on its:
a) Temperature
b) Pressure
c) Mass
d) Chemical composition

d) Chemical composition

The transfer of heat through the emission and absorption of electromagnetic waves is an example of:
a) Conduction
b) Convection
d) Reflection

The process of converting a liquid into a gas at a temperature below its boiling point is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

b) Evaporation

The device used to measure atmospheric pressure is called a:
a) Thermometer
b) Barometer
c) Hydrometer
d) Pyrometer

b) Barometer

The transfer of heat energy from a hotter object to a colder object is based on the principle of:
a) Conservation of energy
b) Conservation of mass
c) Conservation of momentum
d) Conservation of temperature

a) Conservation of energy

The quantity of heat required to raise the temperature of a substance depends on its:
a) Volume
b) Density
c) Mass
d) Pressure

c) Mass

The temperature at which a substance changes from a gas to a liquid state is called:
a) Melting point
b) Boiling point
c) Freezing point
d) Condensation point

d) Condensation point

The transfer of heat energy through the collision of particles in a fluid is an example of:
a) Conduction
b) Convection
d) Reflection

a) Conduction

The relationship between the volume and temperature of a gas at constant pressure is described by:
a) Boyle’s law
b) Charles’s law
c) Gay-Lussac’s law

b) Charles’s law

The amount of heat required to change the temperature of a substance depends on its:
a) Volume
b) Density
c) Mass
d) Pressure

c) Mass

The specific heat capacity of a substance is the amount of heat required to raise the temperature of:
a) One gram of the substance by one degree Celsius
b) One kilogram of the substance by one degree Celsius
c) One gram of the substance by ten degrees Celsius
d) One kilogram of the substance by ten degrees Celsius

a) One gram of the substance by one degree Celsius

The process of converting a gas into a solid without passing through the liquid state is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

c) Sublimation

The temperature scale where the freezing point of water is 32°F and the boiling point is 212°F is the:
a) Celsius scale
b) Kelvin scale
c) Fahrenheit scale
d) Rankine scale

c) Fahrenheit scale

The transfer of heat energy through the emission and absorption of infrared radiation is an example of:
a) Conduction
b) Convection
d) Reflection

The expansion of a substance due to a decrease in its temperature is known as:
a) Contraction
b) Compression
c) Dilatation
d) Expansion

a) Contraction

The second law of thermodynamics states that:
a) Heat always flows from a hot body to a cold body
b) The total energy of an isolated system remains constant
c) The entropy of a system always increases
d) The pressure of a gas is inversely proportional to its volume

c) The entropy of a system always increases

The unit of heat transfer is the same as the unit of:
a) Temperature
b) Energy
c) Mass
d) Volume

b) Energy

The process of converting a gas into a liquid state is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

d) Condensation

The specific heat capacity of water is:
a) 1 J/g°C
b) 4 J/g°C
c) 10 J/g°C
d) 100 J/g°C

b) 4 J/g°C

The amount of heat required to raise the temperature of a substance is directly proportional to its:
a) Volume
b) Density
c) Mass
d) Pressure

c) Mass

The temperature at which a substance changes from a solid to a liquid state is called:
a) Melting point
b) Boiling point
c) Freezing point
d) Condensation point

c) Freezing point

The process of transferring heat by the circulation of a fluid is an example of:
a) Conduction
b) Convection
d) Reflection

b) Convection

The temperature scale where zero degrees represents the absence of molecular motion is the:
a) Celsius scale
b) Kelvin scale
c) Fahrenheit scale
d) Rankine scale

b) Kelvin scale

The transfer of heat through the vibration of particles in a solid is called:
a) Conduction
b) Convection
d) Reflection

a) Conduction

The specific heat capacity of a substance is defined as the amount of heat required to raise the temperature of:
a) One gram of the substance by one degree Celsius
b) One kilogram of the substance by one degree Celsius
c) One gram of the substance by ten degrees Celsius
d) One kilogram of the substance by ten degrees Celsius

a) One gram of the substance by one degree Celsius

The transfer of heat energy from a hotter object to a colder object is based on the principle of:
a) Conservation of energy
b) Conservation of mass
c) Conservation of momentum
d) Conservation of temperature

a) Conservation of energy

The process of converting a solid into a liquid state is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

a) Melting

The principle of conservation of energy states that energy cannot be:
a) Created
b) Destroyed
c) Transformed
d) Transferred

b) Destroyed

The temperature at which a substance changes from a liquid to a gas state is called:
a) Melting point
b) Boiling point
c) Freezing point
d) Condensation point

b) Boiling point

The process of converting a liquid into a gas at its boiling point is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

d) Condensation

The specific heat capacity of a substance depends on its:
a) Temperature
b) Pressure
c) Mass
d) Chemical composition

d) Chemical composition

The transfer of heat energy through the emission and absorption of electromagnetic waves is an example of:
a) Conduction
b) Convection
d) Reflection

The process of converting a liquid into a gas at a temperature below its boiling point is called:
a) Melting
b) Evaporation
c) Sublimation
d) Condensation

b) Evaporation

The device used to measure atmospheric pressure is called a:
a) Thermometer
b) Barometer
c) Hydrometer
d) Pyrometer

b) Barometer

The transfer of heat energy from a hotter object to a colder object is based on the principle of:
a) Conservation of energy
b) Conservation of mass
c) Conservation of momentum
d) Conservation of temperature

a) Conservation of energy

The quantity of heat required to raise the temperature of a substance depends on its:
a) Volume
b) Density
c) Mass
d) Pressure

c) Mass

The temperature at which a substance changes from a gas to a liquid state is called:
a) Melting point
b) Boiling point
c) Freezing point
d) Condensation point

d) Condensation point

The process of transferring heat by the circulation of a fluid is an example of:
a) Conduction
b) Convection
d) Reflection

b) Convection

The temperature scale where the freezing point of water is 32°F and the boiling point is 212°F is the:
a) Celsius scale
b) Kelvin scale
c) Fahrenheit scale
d) Rankine scale

c) Fahrenheit scale

The transfer of heat through the vibration of particles in a solid is called:
a) Conduction
b) Convection
d) Reflection

a) Conduction

The specific heat capacity of a substance is defined as the amount of heat required to raise the temperature of:
a) One gram of the substance by one degree Celsius
b) One kilogram of the substance by one degree Celsius
c) One gram of the substance by ten degrees Celsius
d) One kilogram of the substance by ten degrees Celsius

a) One gram of the substance by one degree Celsius

The transfer of heat energy from a hotter object to a colder object is based on the principle of:
a) Conservation of energy
b) Conservation of mass
c) Conservation of momentum
d) Conservation of temperature