00. First and Zeroth Law of Thermodynamics
Thermodynamics

148169 Figure below shows a cycle process abcda. If $\Delta Q$ be the heat supplied to the system. $\Delta U$ be the change in internal energy and $\Delta W$ be the work done by the system. Then which of the following relation is correct?

1 $\Delta \mathrm{Q}-\Delta \mathrm{W}=0$
2 $\Delta \mathrm{Q}-\Delta \mathrm{U}=0$
3 $\Delta \mathrm{Q}+\Delta \mathrm{Q}=0$
4 $\Delta \mathrm{V}+\Delta \mathrm{U}=0$
Thermodynamics

148170 Two moles of helium gas $\left(\gamma=\frac{5}{3}\right)$ at $27^{\circ} \mathrm{C}$ is
expanded at constant pressures until its volume is doubled. Then it undergoes an adiabatic changes until the temperatures returns to its initial value. The work done during adiabatic process is
(universal gas constant $=8.3 \mathrm{j} \mathrm{mol}^{-1} \mathrm{~K}^{-1}$ )

1 $7470 \mathrm{~J}$
2 $7070 \mathrm{~J}$
3 $4770 \mathrm{~J}$
4 $4077 \mathrm{~J}$
Thermodynamics

148171 An ideal gas undergoes a thermodynamic process ABCDA as shown in the diagram. Total work done during the cycle $A B C D A$ is

1 4 PV
2 Zero
3 PV
4 $0.5 \mathrm{PV}$
Thermodynamics

148172 If $Q, E$ and $W$ denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

1 $\mathrm{W}=0$
2 $\mathrm{Q}=\mathrm{W}=0$
3 $\mathrm{E}=0$
4 $\mathrm{Q}=0$
Thermodynamics

148173 When a system is taken through the process a $b$ c, 80 cal of heat is absorbed by the system and 60 cal of work is done by it if the system is taken through the process adc, 30 cal of heat is absorbed, then work done by the system is

1 $10 \mathrm{cal}$
2 $20 \mathrm{cal}$
3 $30 \mathrm{cal}$
4 $4 \mathrm{cal}$
Thermodynamics

148169 Figure below shows a cycle process abcda. If $\Delta Q$ be the heat supplied to the system. $\Delta U$ be the change in internal energy and $\Delta W$ be the work done by the system. Then which of the following relation is correct?

1 $\Delta \mathrm{Q}-\Delta \mathrm{W}=0$
2 $\Delta \mathrm{Q}-\Delta \mathrm{U}=0$
3 $\Delta \mathrm{Q}+\Delta \mathrm{Q}=0$
4 $\Delta \mathrm{V}+\Delta \mathrm{U}=0$
Thermodynamics

148170 Two moles of helium gas $\left(\gamma=\frac{5}{3}\right)$ at $27^{\circ} \mathrm{C}$ is
expanded at constant pressures until its volume is doubled. Then it undergoes an adiabatic changes until the temperatures returns to its initial value. The work done during adiabatic process is
(universal gas constant $=8.3 \mathrm{j} \mathrm{mol}^{-1} \mathrm{~K}^{-1}$ )

1 $7470 \mathrm{~J}$
2 $7070 \mathrm{~J}$
3 $4770 \mathrm{~J}$
4 $4077 \mathrm{~J}$
Thermodynamics

148171 An ideal gas undergoes a thermodynamic process ABCDA as shown in the diagram. Total work done during the cycle $A B C D A$ is

1 4 PV
2 Zero
3 PV
4 $0.5 \mathrm{PV}$
Thermodynamics

148172 If $Q, E$ and $W$ denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

1 $\mathrm{W}=0$
2 $\mathrm{Q}=\mathrm{W}=0$
3 $\mathrm{E}=0$
4 $\mathrm{Q}=0$
Thermodynamics

148173 When a system is taken through the process a $b$ c, 80 cal of heat is absorbed by the system and 60 cal of work is done by it if the system is taken through the process adc, 30 cal of heat is absorbed, then work done by the system is

1 $10 \mathrm{cal}$
2 $20 \mathrm{cal}$
3 $30 \mathrm{cal}$
4 $4 \mathrm{cal}$
Thermodynamics

148169 Figure below shows a cycle process abcda. If $\Delta Q$ be the heat supplied to the system. $\Delta U$ be the change in internal energy and $\Delta W$ be the work done by the system. Then which of the following relation is correct?

1 $\Delta \mathrm{Q}-\Delta \mathrm{W}=0$
2 $\Delta \mathrm{Q}-\Delta \mathrm{U}=0$
3 $\Delta \mathrm{Q}+\Delta \mathrm{Q}=0$
4 $\Delta \mathrm{V}+\Delta \mathrm{U}=0$
Thermodynamics

148170 Two moles of helium gas $\left(\gamma=\frac{5}{3}\right)$ at $27^{\circ} \mathrm{C}$ is
expanded at constant pressures until its volume is doubled. Then it undergoes an adiabatic changes until the temperatures returns to its initial value. The work done during adiabatic process is
(universal gas constant $=8.3 \mathrm{j} \mathrm{mol}^{-1} \mathrm{~K}^{-1}$ )

1 $7470 \mathrm{~J}$
2 $7070 \mathrm{~J}$
3 $4770 \mathrm{~J}$
4 $4077 \mathrm{~J}$
Thermodynamics

148171 An ideal gas undergoes a thermodynamic process ABCDA as shown in the diagram. Total work done during the cycle $A B C D A$ is

1 4 PV
2 Zero
3 PV
4 $0.5 \mathrm{PV}$
Thermodynamics

148172 If $Q, E$ and $W$ denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

1 $\mathrm{W}=0$
2 $\mathrm{Q}=\mathrm{W}=0$
3 $\mathrm{E}=0$
4 $\mathrm{Q}=0$
Thermodynamics

148173 When a system is taken through the process a $b$ c, 80 cal of heat is absorbed by the system and 60 cal of work is done by it if the system is taken through the process adc, 30 cal of heat is absorbed, then work done by the system is

1 $10 \mathrm{cal}$
2 $20 \mathrm{cal}$
3 $30 \mathrm{cal}$
4 $4 \mathrm{cal}$
Thermodynamics

148169 Figure below shows a cycle process abcda. If $\Delta Q$ be the heat supplied to the system. $\Delta U$ be the change in internal energy and $\Delta W$ be the work done by the system. Then which of the following relation is correct?

1 $\Delta \mathrm{Q}-\Delta \mathrm{W}=0$
2 $\Delta \mathrm{Q}-\Delta \mathrm{U}=0$
3 $\Delta \mathrm{Q}+\Delta \mathrm{Q}=0$
4 $\Delta \mathrm{V}+\Delta \mathrm{U}=0$
Thermodynamics

148170 Two moles of helium gas $\left(\gamma=\frac{5}{3}\right)$ at $27^{\circ} \mathrm{C}$ is
expanded at constant pressures until its volume is doubled. Then it undergoes an adiabatic changes until the temperatures returns to its initial value. The work done during adiabatic process is
(universal gas constant $=8.3 \mathrm{j} \mathrm{mol}^{-1} \mathrm{~K}^{-1}$ )

1 $7470 \mathrm{~J}$
2 $7070 \mathrm{~J}$
3 $4770 \mathrm{~J}$
4 $4077 \mathrm{~J}$
Thermodynamics

148171 An ideal gas undergoes a thermodynamic process ABCDA as shown in the diagram. Total work done during the cycle $A B C D A$ is

1 4 PV
2 Zero
3 PV
4 $0.5 \mathrm{PV}$
Thermodynamics

148172 If $Q, E$ and $W$ denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

1 $\mathrm{W}=0$
2 $\mathrm{Q}=\mathrm{W}=0$
3 $\mathrm{E}=0$
4 $\mathrm{Q}=0$
Thermodynamics

148173 When a system is taken through the process a $b$ c, 80 cal of heat is absorbed by the system and 60 cal of work is done by it if the system is taken through the process adc, 30 cal of heat is absorbed, then work done by the system is

1 $10 \mathrm{cal}$
2 $20 \mathrm{cal}$
3 $30 \mathrm{cal}$
4 $4 \mathrm{cal}$
Thermodynamics

148169 Figure below shows a cycle process abcda. If $\Delta Q$ be the heat supplied to the system. $\Delta U$ be the change in internal energy and $\Delta W$ be the work done by the system. Then which of the following relation is correct?

1 $\Delta \mathrm{Q}-\Delta \mathrm{W}=0$
2 $\Delta \mathrm{Q}-\Delta \mathrm{U}=0$
3 $\Delta \mathrm{Q}+\Delta \mathrm{Q}=0$
4 $\Delta \mathrm{V}+\Delta \mathrm{U}=0$
Thermodynamics

148170 Two moles of helium gas $\left(\gamma=\frac{5}{3}\right)$ at $27^{\circ} \mathrm{C}$ is
expanded at constant pressures until its volume is doubled. Then it undergoes an adiabatic changes until the temperatures returns to its initial value. The work done during adiabatic process is
(universal gas constant $=8.3 \mathrm{j} \mathrm{mol}^{-1} \mathrm{~K}^{-1}$ )

1 $7470 \mathrm{~J}$
2 $7070 \mathrm{~J}$
3 $4770 \mathrm{~J}$
4 $4077 \mathrm{~J}$
Thermodynamics

148171 An ideal gas undergoes a thermodynamic process ABCDA as shown in the diagram. Total work done during the cycle $A B C D A$ is

1 4 PV
2 Zero
3 PV
4 $0.5 \mathrm{PV}$
Thermodynamics

148172 If $Q, E$ and $W$ denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

1 $\mathrm{W}=0$
2 $\mathrm{Q}=\mathrm{W}=0$
3 $\mathrm{E}=0$
4 $\mathrm{Q}=0$
Thermodynamics

148173 When a system is taken through the process a $b$ c, 80 cal of heat is absorbed by the system and 60 cal of work is done by it if the system is taken through the process adc, 30 cal of heat is absorbed, then work done by the system is

1 $10 \mathrm{cal}$
2 $20 \mathrm{cal}$
3 $30 \mathrm{cal}$
4 $4 \mathrm{cal}$