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प्रश्न
Differentiate between the reversible and irreversible processes.
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उत्तर
| Sr. No. | Reversible process | Irreversible process |
| i. | A reversible process is a change that can be retraced in a reverse (opposite) direction. | An irreversible process is a change that cannot be retraced in a reverse (opposite) direction. |
| ii. | The path of a reversible process is the same in the forward and the reverse direction. | The path of an irreversible process is not the same in the forward and the reverse direction. |
| iii. | Reversible changes are very slow and there is no loss of any energy in the process. | There is a permanent loss of energy from the system due to friction or other dissipative forces in an irreversible process. |
| iv. | The system comes back to its initial state after it is taken along the reverse path. | The change of state depends upon the path taken to change the state during an irreversible process. |
| v. | Reversible processes are ideal processes. | Irreversible processes are real processes. |
| vi. |
p-V diagram:
|
p-V diagram:
|
संबंधित प्रश्न
A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in Figure
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Heating a gas in a constant volume container is an example of which process?
What is a thermodynamic process?
Draw a p-V diagram of the irreversible process.
State the assumptions made for thermodynamic processes.
Explain the cyclic process.
Explain the thermodynamics of the isobaric process.
Explain the thermodynamics of the isochoric process.
Give the equation of state for an isothermal process.
Apply first law for an adiabatic process.
Apply first law for an isobaric process.
Draw the PV diagram for the isothermal process.
What is a cyclic process?
Derive the work done in an adiabatic process.
Draw the TP diagram (P-x axis, T-y axis), VT(T-x axis, V-y axis) diagram for
- Isochoric process
- Isothermal process
- Isobaric process
In an adiabatic expansion of the air, the volume is increased by 4%, what is the percentage change in pressure? (For air γ = 1.4)
For a given ideal gas 6 × 105 J heat energy is supplied and the volume of gas is increased from 4 m3 to 6 m3 at atmospheric pressure. Calculate
- the work done by the gas
- change in internal energy of the gas
- graph this process in PV and TV diagram
One mole of an ideal gas with `gamma` = 1.4 is adiabatically compressed so that its temperature rises from 27° C to 47° C. The change in the internal energy of the gas is (R = 8.3 J/mol.K) ____________.
Two identical samples of a gas are allowed to expand (i) isothermally (ii) adiabatically. Work done is ____________.
Assertion: Equal volumes of monatomic and polyatomic gases are adiabatically compressed separately to equal compression ratio `("P"_2/"P"_1)`. Then monatomic gas will have greater final volume.
Reason: Among ideal gases, molecules of a monatomic gas have the smallest number of degrees of freedom.
An ideal gas is compressed to half its initial volume by means of several processes. Which of the process results in the maximum work done on the gas?
Consider P-V diagram for an ideal gas shown in figure.
Out of the following diagrams (figure), which represents the T-P diagram?
 (i) |
 (ii) |
 (iii) |
 (iv) |
Give any two types of a thermodynamic process.
An ideal gas is taken through a cyclic process ABCDA as shown in figure. The net work done by the gas during the cycle is ______.
In a cyclic process, if ΔU = internal energy, W = work done, Q = Heat supplied then ______.
