148453
A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve $\mathrm{OC}$ represents :
1 isochoric process
2 isothermal process
3 isobaric process
4 adiabatic process
Explanation:
D Isochoric Process- It is a thermodynamic process in a system, during which the volume remains constant is called the isochoric process. $\Delta \mathrm{V}=0$ Isobaric Process- The thermodynamic process in a system during which the pressure remains Constant $\Delta \mathrm{P}=0$ Adiabatic Process- The thermodynamic process in a system during which no heat or mass transfer occurs between thermodynamic system is called an adiabatic process. - Curve OA, $\mathrm{P}=$ constant, means Isobaric process. - Curve OD, $\mathrm{V}=$ constant, means isochoric process. - Curve OB represents isothermal process. - Curve OC represent adiabatic process.
Karnataka CET-2009
Thermodynamics
148446
Assertion: Air quickly leaking out of a balloon becomes cooler. Reason: The leaking air undergoes adiabatic expansion.
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.
Explanation:
A The condition that on exchange of heat takes place between the system and surroundings then such process is called adiabatic process, leaking air of balloon undergoes adiabatic due to work done against external pressure the internal molecules into or out of the system by heat the air. Molecule escaping from the balloon work on the surrounding air molecule push them out the way.
AIIMS-2005
Thermodynamics
148447
Assertion: When a bottle of cold carbonated drink is opened, a slight fog forms around the opening. Reason: Adiabatic expansion of the gas causes lowering of temperature and condensation of water vapours.
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.
Explanation:
A When a bottle of cold carbonated drink is opened, then adiabatic expansion of gas evolved due temperature of gas decreases. Adiabatic expansion causes cooling.
AIIMS-2003
Thermodynamics
148454
An ideal monoatomic gas at $27^{\circ} \mathrm{C}$ is compressed adiabatically to $\frac{8}{27}$ times of its present volume. The increase in temperature of the gas is :
1 $375^{\circ} \mathrm{C}$
2 $402^{\circ} \mathrm{C}$
3 $175^{\circ} \mathrm{C}$
4 $475^{\circ} \mathrm{C}$
Explanation:
A As we know that for adiabatic process $\mathrm{PV}^{\gamma}=\text { Constant }$ $\mathrm{TV}^{\gamma-1}=\text { Constant }$ For monoatomic gas $\gamma=\frac{5}{3}$ $\mathrm{T}_{1}=27^{\circ} \mathrm{C}=27+273=300 \mathrm{~K}$ Using $\mathrm{TV}^{\gamma-1}=$ Constant $\mathrm{T}_{1} \mathrm{~V}_{1}^{\gamma-1}=\mathrm{T}_{2} \mathrm{~V}_{2}^{\gamma-1}$ $\frac{\mathrm{T}_{2}}{\mathrm{~T}_{1}}=\left(\frac{\mathrm{V}_{1}}{\mathrm{~V}_{2}}\right)^{\gamma-1}$ $\mathrm{T}_{2}=\left(\frac{27}{8}\right)^{2 / 3} \times \mathrm{T}_{1}$ $\mathrm{T}_{2}=\left(\frac{3}{2}\right)^{2} \times 300$ $\mathrm{T}_{2}=675-273=402^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=\mathrm{T}_{2}-\mathrm{T}_{1}$ $=402^{\circ} \mathrm{C}-27^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=375^{\circ} \mathrm{C}$ Where $\Delta T$ is the increase in temperature of the gas.
148453
A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve $\mathrm{OC}$ represents :
1 isochoric process
2 isothermal process
3 isobaric process
4 adiabatic process
Explanation:
D Isochoric Process- It is a thermodynamic process in a system, during which the volume remains constant is called the isochoric process. $\Delta \mathrm{V}=0$ Isobaric Process- The thermodynamic process in a system during which the pressure remains Constant $\Delta \mathrm{P}=0$ Adiabatic Process- The thermodynamic process in a system during which no heat or mass transfer occurs between thermodynamic system is called an adiabatic process. - Curve OA, $\mathrm{P}=$ constant, means Isobaric process. - Curve OD, $\mathrm{V}=$ constant, means isochoric process. - Curve OB represents isothermal process. - Curve OC represent adiabatic process.
Karnataka CET-2009
Thermodynamics
148446
Assertion: Air quickly leaking out of a balloon becomes cooler. Reason: The leaking air undergoes adiabatic expansion.
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.
Explanation:
A The condition that on exchange of heat takes place between the system and surroundings then such process is called adiabatic process, leaking air of balloon undergoes adiabatic due to work done against external pressure the internal molecules into or out of the system by heat the air. Molecule escaping from the balloon work on the surrounding air molecule push them out the way.
AIIMS-2005
Thermodynamics
148447
Assertion: When a bottle of cold carbonated drink is opened, a slight fog forms around the opening. Reason: Adiabatic expansion of the gas causes lowering of temperature and condensation of water vapours.
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.
Explanation:
A When a bottle of cold carbonated drink is opened, then adiabatic expansion of gas evolved due temperature of gas decreases. Adiabatic expansion causes cooling.
AIIMS-2003
Thermodynamics
148454
An ideal monoatomic gas at $27^{\circ} \mathrm{C}$ is compressed adiabatically to $\frac{8}{27}$ times of its present volume. The increase in temperature of the gas is :
1 $375^{\circ} \mathrm{C}$
2 $402^{\circ} \mathrm{C}$
3 $175^{\circ} \mathrm{C}$
4 $475^{\circ} \mathrm{C}$
Explanation:
A As we know that for adiabatic process $\mathrm{PV}^{\gamma}=\text { Constant }$ $\mathrm{TV}^{\gamma-1}=\text { Constant }$ For monoatomic gas $\gamma=\frac{5}{3}$ $\mathrm{T}_{1}=27^{\circ} \mathrm{C}=27+273=300 \mathrm{~K}$ Using $\mathrm{TV}^{\gamma-1}=$ Constant $\mathrm{T}_{1} \mathrm{~V}_{1}^{\gamma-1}=\mathrm{T}_{2} \mathrm{~V}_{2}^{\gamma-1}$ $\frac{\mathrm{T}_{2}}{\mathrm{~T}_{1}}=\left(\frac{\mathrm{V}_{1}}{\mathrm{~V}_{2}}\right)^{\gamma-1}$ $\mathrm{T}_{2}=\left(\frac{27}{8}\right)^{2 / 3} \times \mathrm{T}_{1}$ $\mathrm{T}_{2}=\left(\frac{3}{2}\right)^{2} \times 300$ $\mathrm{T}_{2}=675-273=402^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=\mathrm{T}_{2}-\mathrm{T}_{1}$ $=402^{\circ} \mathrm{C}-27^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=375^{\circ} \mathrm{C}$ Where $\Delta T$ is the increase in temperature of the gas.
148453
A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve $\mathrm{OC}$ represents :
1 isochoric process
2 isothermal process
3 isobaric process
4 adiabatic process
Explanation:
D Isochoric Process- It is a thermodynamic process in a system, during which the volume remains constant is called the isochoric process. $\Delta \mathrm{V}=0$ Isobaric Process- The thermodynamic process in a system during which the pressure remains Constant $\Delta \mathrm{P}=0$ Adiabatic Process- The thermodynamic process in a system during which no heat or mass transfer occurs between thermodynamic system is called an adiabatic process. - Curve OA, $\mathrm{P}=$ constant, means Isobaric process. - Curve OD, $\mathrm{V}=$ constant, means isochoric process. - Curve OB represents isothermal process. - Curve OC represent adiabatic process.
Karnataka CET-2009
Thermodynamics
148446
Assertion: Air quickly leaking out of a balloon becomes cooler. Reason: The leaking air undergoes adiabatic expansion.
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.
Explanation:
A The condition that on exchange of heat takes place between the system and surroundings then such process is called adiabatic process, leaking air of balloon undergoes adiabatic due to work done against external pressure the internal molecules into or out of the system by heat the air. Molecule escaping from the balloon work on the surrounding air molecule push them out the way.
AIIMS-2005
Thermodynamics
148447
Assertion: When a bottle of cold carbonated drink is opened, a slight fog forms around the opening. Reason: Adiabatic expansion of the gas causes lowering of temperature and condensation of water vapours.
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.
Explanation:
A When a bottle of cold carbonated drink is opened, then adiabatic expansion of gas evolved due temperature of gas decreases. Adiabatic expansion causes cooling.
AIIMS-2003
Thermodynamics
148454
An ideal monoatomic gas at $27^{\circ} \mathrm{C}$ is compressed adiabatically to $\frac{8}{27}$ times of its present volume. The increase in temperature of the gas is :
1 $375^{\circ} \mathrm{C}$
2 $402^{\circ} \mathrm{C}$
3 $175^{\circ} \mathrm{C}$
4 $475^{\circ} \mathrm{C}$
Explanation:
A As we know that for adiabatic process $\mathrm{PV}^{\gamma}=\text { Constant }$ $\mathrm{TV}^{\gamma-1}=\text { Constant }$ For monoatomic gas $\gamma=\frac{5}{3}$ $\mathrm{T}_{1}=27^{\circ} \mathrm{C}=27+273=300 \mathrm{~K}$ Using $\mathrm{TV}^{\gamma-1}=$ Constant $\mathrm{T}_{1} \mathrm{~V}_{1}^{\gamma-1}=\mathrm{T}_{2} \mathrm{~V}_{2}^{\gamma-1}$ $\frac{\mathrm{T}_{2}}{\mathrm{~T}_{1}}=\left(\frac{\mathrm{V}_{1}}{\mathrm{~V}_{2}}\right)^{\gamma-1}$ $\mathrm{T}_{2}=\left(\frac{27}{8}\right)^{2 / 3} \times \mathrm{T}_{1}$ $\mathrm{T}_{2}=\left(\frac{3}{2}\right)^{2} \times 300$ $\mathrm{T}_{2}=675-273=402^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=\mathrm{T}_{2}-\mathrm{T}_{1}$ $=402^{\circ} \mathrm{C}-27^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=375^{\circ} \mathrm{C}$ Where $\Delta T$ is the increase in temperature of the gas.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Thermodynamics
148453
A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve $\mathrm{OC}$ represents :
1 isochoric process
2 isothermal process
3 isobaric process
4 adiabatic process
Explanation:
D Isochoric Process- It is a thermodynamic process in a system, during which the volume remains constant is called the isochoric process. $\Delta \mathrm{V}=0$ Isobaric Process- The thermodynamic process in a system during which the pressure remains Constant $\Delta \mathrm{P}=0$ Adiabatic Process- The thermodynamic process in a system during which no heat or mass transfer occurs between thermodynamic system is called an adiabatic process. - Curve OA, $\mathrm{P}=$ constant, means Isobaric process. - Curve OD, $\mathrm{V}=$ constant, means isochoric process. - Curve OB represents isothermal process. - Curve OC represent adiabatic process.
Karnataka CET-2009
Thermodynamics
148446
Assertion: Air quickly leaking out of a balloon becomes cooler. Reason: The leaking air undergoes adiabatic expansion.
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.
Explanation:
A The condition that on exchange of heat takes place between the system and surroundings then such process is called adiabatic process, leaking air of balloon undergoes adiabatic due to work done against external pressure the internal molecules into or out of the system by heat the air. Molecule escaping from the balloon work on the surrounding air molecule push them out the way.
AIIMS-2005
Thermodynamics
148447
Assertion: When a bottle of cold carbonated drink is opened, a slight fog forms around the opening. Reason: Adiabatic expansion of the gas causes lowering of temperature and condensation of water vapours.
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.
Explanation:
A When a bottle of cold carbonated drink is opened, then adiabatic expansion of gas evolved due temperature of gas decreases. Adiabatic expansion causes cooling.
AIIMS-2003
Thermodynamics
148454
An ideal monoatomic gas at $27^{\circ} \mathrm{C}$ is compressed adiabatically to $\frac{8}{27}$ times of its present volume. The increase in temperature of the gas is :
1 $375^{\circ} \mathrm{C}$
2 $402^{\circ} \mathrm{C}$
3 $175^{\circ} \mathrm{C}$
4 $475^{\circ} \mathrm{C}$
Explanation:
A As we know that for adiabatic process $\mathrm{PV}^{\gamma}=\text { Constant }$ $\mathrm{TV}^{\gamma-1}=\text { Constant }$ For monoatomic gas $\gamma=\frac{5}{3}$ $\mathrm{T}_{1}=27^{\circ} \mathrm{C}=27+273=300 \mathrm{~K}$ Using $\mathrm{TV}^{\gamma-1}=$ Constant $\mathrm{T}_{1} \mathrm{~V}_{1}^{\gamma-1}=\mathrm{T}_{2} \mathrm{~V}_{2}^{\gamma-1}$ $\frac{\mathrm{T}_{2}}{\mathrm{~T}_{1}}=\left(\frac{\mathrm{V}_{1}}{\mathrm{~V}_{2}}\right)^{\gamma-1}$ $\mathrm{T}_{2}=\left(\frac{27}{8}\right)^{2 / 3} \times \mathrm{T}_{1}$ $\mathrm{T}_{2}=\left(\frac{3}{2}\right)^{2} \times 300$ $\mathrm{T}_{2}=675-273=402^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=\mathrm{T}_{2}-\mathrm{T}_{1}$ $=402^{\circ} \mathrm{C}-27^{\circ} \mathrm{C}$ $\Delta \mathrm{T}=375^{\circ} \mathrm{C}$ Where $\Delta T$ is the increase in temperature of the gas.
