Understanding the Laws of Thermodynamics

Which of the following statements best describes the First Law of Thermodynamics?

• Energy can be created or destroyed, but not transferred.

• Energy cannot be created or destroyed, only transferred or transformed.

• The entropy of a system always decreases.

• The temperature of a system remains constant.

What is the main concept of the Second Law of Thermodynamics?

• Energy is conserved in an isolated system.

• The entropy of an isolated system always increases over time.

• The total energy of a system remains constant.

• Heat flows from a colder body to a hotter body.

Which of the following is a consequence of the Third Law of Thermodynamics?

• It is impossible to reach absolute zero temperature.

• Energy can be converted into mass.

• The entropy of a perfect crystal at absolute zero is zero.

• Heat can be completely converted into work.

What does the Zeroth Law of Thermodynamics state?

• If two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other.

• Energy cannot be created or destroyed.

• The entropy of a system always increases.

• Heat flows from hot to cold spontaneously.

Which equation represents the First Law of Thermodynamics?

In the context of thermodynamics, what does the term "entropy" refer to?

• The total energy of a system.

• The measure of disorder or randomness in a system.

• The temperature of a system.

• The pressure of a system.

Which of the following processes is an example of an increase in entropy?

• Freezing of water.

• Melting of ice.

• Compression of a gas.

• Formation of a crystal.

What is the significance of the Carnot cycle in thermodynamics?

• It describes the most efficient heat engine possible.

• It explains the conservation of energy.

• It defines the absolute zero temperature.

• It measures the pressure-volume work done by a system.

Which of the following is true for a reversible process in thermodynamics?

• It occurs spontaneously.

• It can be reversed without leaving any change in both the system and surroundings.

• It increases the entropy of the universe.

• It is always isothermal.

What is the unit of entropy in the International System of Units (SI)?

• Joules (J)

• Watts (W)

• Joules per Kelvin (J/K)

• Kelvin (K)