02. Thermodynamics Process
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Thermodynamics

148281 Ideal gas undergoes an adiabatic change in its state from $\left(\mathrm{P}_{1}, \mathrm{~V}_{1}, \mathbf{T}_{1}\right)$ to $\left(\mathrm{P}_{2}, \mathrm{~V}_{2}, \mathbf{T}_{2}\right)$. The work done $(W)$ in the process is $(\mu=$ number of mole $C_{P}$, and $C_{V}$, are molar specific heats of gas)

1 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
2 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
3 $\mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
4 $\quad \mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
COMEDK 2017
Thermodynamics

148282 $1 \mathrm{~mm}^{3}$ of a gas is compressed at 1 atmospheric pressure and temperature $27^{\circ} \mathrm{C}$ to $627^{\circ} \mathrm{C}$. What is the final pressure under adiabatic condition? $(\gamma$ for thegas $=1.5)$

1 $27 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
2 $80 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
3 $36 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
4 $56 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
COMEDK 2020
Thermodynamics

148283 Assertion: When a glass of hot milk is placed in a room and allowed to cool, its entropy decreases.
Reason: Allowing hot object to cool does not violate the second law of thermodynamics.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2006
Thermodynamics

148284 Assertion: Thermodynamic process in nature are irreversible.
Reason: Dissipative effects cannot be eliminated.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2004
Thermodynamics

148286 The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

1 $\frac{1}{4}$
2 $\frac{1}{2}$
3 $\frac{2}{3}$
4 $\frac{1}{3}$
AIIMS-2008
Join With Us for More Updates
Thermodynamics

148281 Ideal gas undergoes an adiabatic change in its state from $\left(\mathrm{P}_{1}, \mathrm{~V}_{1}, \mathbf{T}_{1}\right)$ to $\left(\mathrm{P}_{2}, \mathrm{~V}_{2}, \mathbf{T}_{2}\right)$. The work done $(W)$ in the process is $(\mu=$ number of mole $C_{P}$, and $C_{V}$, are molar specific heats of gas)

1 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
2 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
3 $\mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
4 $\quad \mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
COMEDK 2017
Thermodynamics

148282 $1 \mathrm{~mm}^{3}$ of a gas is compressed at 1 atmospheric pressure and temperature $27^{\circ} \mathrm{C}$ to $627^{\circ} \mathrm{C}$. What is the final pressure under adiabatic condition? $(\gamma$ for thegas $=1.5)$

1 $27 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
2 $80 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
3 $36 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
4 $56 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
COMEDK 2020
Thermodynamics

148283 Assertion: When a glass of hot milk is placed in a room and allowed to cool, its entropy decreases.
Reason: Allowing hot object to cool does not violate the second law of thermodynamics.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2006
Thermodynamics

148284 Assertion: Thermodynamic process in nature are irreversible.
Reason: Dissipative effects cannot be eliminated.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2004
Thermodynamics

148286 The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

1 $\frac{1}{4}$
2 $\frac{1}{2}$
3 $\frac{2}{3}$
4 $\frac{1}{3}$
AIIMS-2008
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Thermodynamics

148281 Ideal gas undergoes an adiabatic change in its state from $\left(\mathrm{P}_{1}, \mathrm{~V}_{1}, \mathbf{T}_{1}\right)$ to $\left(\mathrm{P}_{2}, \mathrm{~V}_{2}, \mathbf{T}_{2}\right)$. The work done $(W)$ in the process is $(\mu=$ number of mole $C_{P}$, and $C_{V}$, are molar specific heats of gas)

1 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
2 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
3 $\mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
4 $\quad \mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
COMEDK 2017
Thermodynamics

148282 $1 \mathrm{~mm}^{3}$ of a gas is compressed at 1 atmospheric pressure and temperature $27^{\circ} \mathrm{C}$ to $627^{\circ} \mathrm{C}$. What is the final pressure under adiabatic condition? $(\gamma$ for thegas $=1.5)$

1 $27 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
2 $80 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
3 $36 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
4 $56 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
COMEDK 2020
Thermodynamics

148283 Assertion: When a glass of hot milk is placed in a room and allowed to cool, its entropy decreases.
Reason: Allowing hot object to cool does not violate the second law of thermodynamics.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2006
Thermodynamics

148284 Assertion: Thermodynamic process in nature are irreversible.
Reason: Dissipative effects cannot be eliminated.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2004
Thermodynamics

148286 The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

1 $\frac{1}{4}$
2 $\frac{1}{2}$
3 $\frac{2}{3}$
4 $\frac{1}{3}$
AIIMS-2008
NEET DIGITAL LIBRARY
Thermodynamics

148281 Ideal gas undergoes an adiabatic change in its state from $\left(\mathrm{P}_{1}, \mathrm{~V}_{1}, \mathbf{T}_{1}\right)$ to $\left(\mathrm{P}_{2}, \mathrm{~V}_{2}, \mathbf{T}_{2}\right)$. The work done $(W)$ in the process is $(\mu=$ number of mole $C_{P}$, and $C_{V}$, are molar specific heats of gas)

1 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
2 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
3 $\mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
4 $\quad \mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
COMEDK 2017
Thermodynamics

148282 $1 \mathrm{~mm}^{3}$ of a gas is compressed at 1 atmospheric pressure and temperature $27^{\circ} \mathrm{C}$ to $627^{\circ} \mathrm{C}$. What is the final pressure under adiabatic condition? $(\gamma$ for thegas $=1.5)$

1 $27 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
2 $80 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
3 $36 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
4 $56 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
COMEDK 2020
Thermodynamics

148283 Assertion: When a glass of hot milk is placed in a room and allowed to cool, its entropy decreases.
Reason: Allowing hot object to cool does not violate the second law of thermodynamics.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2006
Thermodynamics

148284 Assertion: Thermodynamic process in nature are irreversible.
Reason: Dissipative effects cannot be eliminated.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2004
Thermodynamics

148286 The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

1 $\frac{1}{4}$
2 $\frac{1}{2}$
3 $\frac{2}{3}$
4 $\frac{1}{3}$
AIIMS-2008
Join With Us for More Updates
Thermodynamics

148281 Ideal gas undergoes an adiabatic change in its state from $\left(\mathrm{P}_{1}, \mathrm{~V}_{1}, \mathbf{T}_{1}\right)$ to $\left(\mathrm{P}_{2}, \mathrm{~V}_{2}, \mathbf{T}_{2}\right)$. The work done $(W)$ in the process is $(\mu=$ number of mole $C_{P}$, and $C_{V}$, are molar specific heats of gas)

1 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
2 $\mathrm{W}=\mu\left(\mathrm{T}_{1}-\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
3 $\mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{p}}$
4 $\quad \mathrm{W}=\mu\left(\mathrm{T}_{1}+\mathrm{T}_{2}\right) \mathrm{C}_{\mathrm{V}}$
COMEDK 2017
Thermodynamics

148282 $1 \mathrm{~mm}^{3}$ of a gas is compressed at 1 atmospheric pressure and temperature $27^{\circ} \mathrm{C}$ to $627^{\circ} \mathrm{C}$. What is the final pressure under adiabatic condition? $(\gamma$ for thegas $=1.5)$

1 $27 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
2 $80 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
3 $36 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
4 $56 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}$
COMEDK 2020
Thermodynamics

148283 Assertion: When a glass of hot milk is placed in a room and allowed to cool, its entropy decreases.
Reason: Allowing hot object to cool does not violate the second law of thermodynamics.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2006
Thermodynamics

148284 Assertion: Thermodynamic process in nature are irreversible.
Reason: Dissipative effects cannot be eliminated.

1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
5 If the Assertion is incorrect but the Reason is correct.
AIIMS-2004
Thermodynamics

148286 The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is

1 $\frac{1}{4}$
2 $\frac{1}{2}$
3 $\frac{2}{3}$
4 $\frac{1}{3}$
AIIMS-2008