Isochoric Processes: Constant Volume Thermodynamics

Question 1

In thermodynamics, an isochoric process is a process where:

Accepted Answer

Volume is constant.

Answer

Pressure is constant.

Answer

Temperature is constant.

Answer

Internal energy is constant.

Question 2

Which device operates based on the principle of an isochoric process, where volume remains constant?

Accepted Answer

Pressure cooker

Answer

Diesel engine

Answer

Refrigerator

Answer

Steam turbine

Question 3

In an isochoric process, which parameter remains unchanged?

Accepted Answer

Volume

Answer

Pressure

Answer

Temperature

Answer

Internal energy

Question 4

During isochoric heating, how does the pressure of the system change?

Accepted Answer

Increases

Answer

Decreases

Answer

Stays the same

Answer

Cannot be determined without more information

Question 5

Which formula represents the work done in an isochoric process?

Accepted Answer

W = 0

Answer

W = P * (V2 - V1)

Answer

W = P * (V1 - V2)

Answer

W = P * V

Question 6

What is the heat capacity of an ideal gas in an isochoric process?

Accepted Answer

Cv

Answer

Cp

Answer

R

Answer

Cv/R

Question 7

What is the change in entropy during an isochoric process?

Accepted Answer

Zero

Answer

Positive

Answer

Negative

Answer

Cannot be determined without more information

Question 8

In an isochoric process of an ideal gas, how does the gas's internal energy change if its temperature increases?

Accepted Answer

Increases

Answer

Decreases

Answer

Remains constant

Answer

Becomes zero

Question 9

In an isochoric process, which quantity remains constant?

Accepted Answer

Volume

Answer

Temperature

Answer

Pressure

Question 10

What is the defining characteristic of an isochoric process?

Accepted Answer

Constant volume

Answer

Constant pressure

Answer

No change in temperature

Answer

No heat transfer

Question 11

During an isochoric heating process, what happens to the temperature of the system?

Accepted Answer

Increases

Answer

Decreases

Answer

Remains Constant

Question 12

In an isochoric process with an ideal gas, how does pressure (P) change in relation to temperature (T)?

Accepted Answer

P increases as T increases.

Answer

P decreases as T increases.

Answer

P remains constant regardless of T.

Question 13

During isochoric heating, what happens to the pressure of the system?

Accepted Answer

Increases

Answer

Decreases

Answer

Remains constant

Answer

Becomes negative

Question 14

Which of the following equations represents an isochoric process?

Accepted Answer

ΔV = 0

Answer

ΔU ≠ 0

Answer

ΔP ≠ 0

Answer

ΔT ≠ 0

Question 15

In an isochoric cooling process, what happens to the internal energy of the system?

Accepted Answer

Decreases

Answer

Becomes negative

Answer

Remains constant

Answer

Increases

Question 16

Which of the following is a characteristic of an isochoric process?

Accepted Answer

Constant volume

Answer

Constant pressure

Answer

Constant temperature

Answer

Constant energy

Question 17

Which of the following processes is represented by the PV diagram shown below? [Image of a PV diagram with constant volume]?

Accepted Answer

Isochoric process

Answer

Isothermal process

Answer

Adiabatic process

Answer

Isobaric process

Question 18

In an isochoric process, what does the specific heat capacity represent?

Accepted Answer

Heat required to raise the temperature of the system by one degree while keeping the volume constant

Answer

Heat required to raise the temperature of the system by one degree while keeping the pressure constant

Answer

Heat required to raise the temperature of the system by one degree without changing its volume

Answer

Heat required to raise the temperature of the system by one degree while keeping its energy constant

Question 19

In an isochoric process, which variable remains constant?

Accepted Answer

Volume

Answer

Internal energy

Answer

Temperature

Answer

Pressure

Question 20

Which of the following is NOT a feature of isochoric processes?

Accepted Answer

Work is done on the system

Answer

Pressure may change

Answer

Volume remains constant

Answer

Heat can be transferred

Question 21

Which of the following expressions represents the work done (W) in an isochoric process?

Accepted Answer

0

Answer

nRTln(V2/V1)

Answer

C(T2 - T1)

Answer

P(V2 - V1)

Question 22

On a P-V diagram, an isochoric process is represented by a:

Accepted Answer

Vertical line

Answer

Curved line

Answer

Horizontal line

Answer

Diagonal line

Question 23

Which of the following processes can be considered approximately isochoric in real-world applications?

Accepted Answer

Combustion in a closed container

Answer

Adiabatic compression of a gas

Answer

Expansion of an ideal gas in a vacuum

Answer

Flow of a fluid through a nozzle

Question 24

Which of the following assumptions is NOT made in the analysis of ideal isochoric processes?

Accepted Answer

Gas molecules have negligible kinetic energy

Answer

Gas behaves ideally

Answer

Process occurs at constant volume

Answer

No heat transfer occurs

Question 25

Which of the following statements accurately describes an isochoric cooling process?

Accepted Answer

Heat is removed from the system

Answer

Volume increases

Answer

Pressure decreases

Answer

Heat is added to the system

Question 26

Which of the following is NOT a characteristic of an isochoric process?

Accepted Answer

Work is done by the system

Answer

Internal energy changes

Answer

Heat can be transferred

Answer

Volume remains constant

Question 27

An ideal gas with an initial volume of 2 m³ and an initial pressure of 100 kPa undergoes an isochoric heating process that increases its temperature from 300 K to 400 K. What is its final pressure?

Accepted Answer

133.33 kPa

Answer

400 kPa

Answer

200 kPa

Answer

100 kPa

Question 28

Which type of process can be graphically represented by a vertical line on a P-V diagram?

Accepted Answer

Isochoric process

Answer

Isothermal process

Answer

Isobaric process

Question 29

An isochoric process is performed on 10 moles of an ideal gas. The initial temperature is 298 K, and the initial pressure is 2 atm. If the gas is heated until its pressure doubles, what is the final temperature?

Accepted Answer

596 K

Answer

298 K

Answer

894 K

Answer

447 K

Question 30

Which of the following statements about isochoric processes is accurate?

Accepted Answer

The change in volume is zero.

Answer

The work done by the gas is always zero.

Answer

The change in pressure is always positive.

Answer

The change in temperature is always negative.

Question 31

During an isochoric process, which of the following remains constant?

Accepted Answer

Volume

Answer

Pressure

Answer

Internal energy

Answer

Temperature

Question 32

When an ideal gas undergoes isochoric heating, its pressure:

Accepted Answer

Increases

Answer

Remains constant

Answer

Decreases

Answer

Becomes negative

Question 33

Which of the following is NOT a characteristic of an isochoric process?

Accepted Answer

Change in volume

Answer

Energy transfer

Answer

Pressure change

Answer

Temperature change

Question 34

In an isochoric process, the work done by the system is:

Accepted Answer

Zero

Answer

Equal to the heat transferred

Answer

Negative

Answer

Positive

Question 35

Which of the following scenarios describes an isochoric process?

Accepted Answer

A gas expands while the container volume remains fixed.

Answer

A gas is compressed isothermally.

Answer

A gas undergoes adiabatic expansion.

Answer

A gas is cooled at constant pressure.

Question 36

An isochoric process is also referred to as a:

Accepted Answer

Constant-volume process

Answer

Adiabatic process

Answer

Isothermal process

Answer

Constant-pressure process

Question 37

Which of the following can limit the applicability of the ideal gas law for isochoric processes involving real gases?

Accepted Answer

Significant intermolecular forces at high pressures

Answer

Neglect of kinetic energy

Answer

Inaccuracy at low temperatures

Question 38

In an isochoric process involving an ideal gas, the change in entropy is:

Accepted Answer

Zero

Answer

Negative

Answer

Equal to the change in internal energy

Answer

Positive

Question 39

During an isochoric heating process of an ideal gas, what happens to the internal energy?

Accepted Answer

Increases

Answer

Cannot be determined

Answer

Decreases

Answer

Remains constant

Question 40

In an isochoric process, the heat transfer is given by:

Accepted Answer

dQ = CvdT

Answer

dQ = Cp dT

Answer

dQ = RTdV

Answer

dQ = PdV

Question 41

Which of the following examples represents an isochoric process?

Accepted Answer

Filling a closed container with gas

Answer

Cooling a gas in an open container

Answer

Heating a gas in an open container

Answer

Expanding a gas into a larger container

Question 42

What is the change in internal energy for an isochoric process?

Accepted Answer

Q

Answer

Q - W

Answer

W

Answer

W - Q

Question 43

Which of the following graphs best represents an isochoric process on a P-V diagram?

Accepted Answer

Vertical line

Answer

Horizontal line

Answer

Diagonal line

Answer

Curved line

Question 44

In an isochoric process, the work done by the system is:

Accepted Answer

Zero

Answer

Equal to the heat transferred

Answer

Positive

Answer

Negative

Question 45

An isochoric process occurs when the volume of a system:

Accepted Answer

Remains constant

Answer

Decreases

Answer

Changes unpredictably

Answer

Increases

Question 46

During an isochoric heating process, what happens to the pressure of the system?

Accepted Answer

Increases

Answer

Decreases

Answer

Remains constant

Answer

Fluctuates rapidly

Question 47

In an isochoric cooling process, the internal energy of the system:

Accepted Answer

Decreases

Answer

Increases

Answer

Remains constant

Answer

Varies erratically

Question 48

Which of the following is NOT a characteristic of an isochoric process?

Accepted Answer

Heat is transferred

Answer

Temperature changes

Answer

Pressure changes

Answer

Volume remains constant

Question 49

An ideal gas undergoes an isochoric process. If the initial temperature is 300 K and the final temperature is 500 K, what is the ratio of the final pressure to the initial pressure?

Accepted Answer

5/3

Answer

2

Answer

1

Answer

3/5

Question 50

A closed system undergoes an isochoric process. Heat is added to the system, causing the temperature to increase. What can be concluded about the work done by the system?

Accepted Answer

It is zero

Answer

It is positive

Answer

It is negative

Answer

It cannot be determined

Question 51

Which of the following processes is an example of an isochoric process?

Accepted Answer

Heating a gas in a sealed container

Answer

Compressing a gas in a piston

Answer

Expanding a gas in a cylinder

Answer

Cooling a gas in an open vessel

Question 52

The pressure of an ideal gas in an isochoric process is proportional to:

Accepted Answer

Temperature

Answer

Entropy

Answer

Density

Answer

Volume