00. First and Zeroth Law of Thermodynamics
Thermodynamics

148153 A thermodynamic system undergoes cyclic process $A B C D A$ as shown in fig. The work done by the system in the cycle is-

1 $\mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
2 $2 \mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
3 $\frac{P_{O} V_{O}}{2}$
4 Zero
Thermodynamics

148154 One mole of an ideal monoatomic gas expands till its temperature doubles under the process $\mathrm{V}^{2} \mathrm{~T}=$ constant. If the initial temperature is $\mathbf{4 0 0}$ $\mathrm{K}$, the work done by the gas is

1 $400 \mathrm{R}$
2 $200 \mathrm{R}$
3 $-200 \mathrm{R}$
4 indeterminate
Thermodynamics

148155 The height of a waterfall is $50 \mathrm{~m}$. If $\mathrm{g}=9.8 \mathrm{~ms}^{-2}$, the difference between the temperature at the top and the bottom of the waterfall is

1 $1.17^{\circ} \mathrm{C}$
2 $2.17^{\circ} \mathrm{C}$
3 $0.117^{\circ} \mathrm{C}$
4 $1.43^{\circ} \mathrm{C}$
Thermodynamics

148157 A 5 mole bubble of Helium gas (monoatomic) is submerged to a certain depth in water which undergoes an increase of $10^{\circ} \mathrm{C}$ in its temperature. How much energy is added to the helium bubble as heat during the increase in its temperature and its consequent expansion?
(Take $\mathrm{R}=8.31 \mathrm{~J} / \mathrm{mol}-\mathrm{K}$ )

1 $625 \mathrm{~J}$
2 $1040 \mathrm{~J}$
3 $1250 \mathrm{~J}$
4 $2325 \mathrm{~J}$
Thermodynamics

148158 An office room contains about 2000 moles of air. The change in the internal energy of this much air when it is cooled from $34^{\circ} \mathrm{C}$ to $24^{\circ} \mathrm{C}$ at a constant pressure of $1.0 \mathrm{~atm}$ is
[Use $\gamma_{\text {air }}=1.4$ and Universal gas constant $=8.314 \mathrm{~J} / \mathrm{mol} \mathrm{K}]$

1 $-1.9 \times 10^{5} \mathrm{~J}$
2 $+1.9 \times 10^{5} \mathrm{~J}$
3 $-4.2 \times 10^{5} \mathrm{~J}$
4 $+0.7 \times 10^{5} \mathrm{~J}$
Thermodynamics

148153 A thermodynamic system undergoes cyclic process $A B C D A$ as shown in fig. The work done by the system in the cycle is-

1 $\mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
2 $2 \mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
3 $\frac{P_{O} V_{O}}{2}$
4 Zero
Thermodynamics

148154 One mole of an ideal monoatomic gas expands till its temperature doubles under the process $\mathrm{V}^{2} \mathrm{~T}=$ constant. If the initial temperature is $\mathbf{4 0 0}$ $\mathrm{K}$, the work done by the gas is

1 $400 \mathrm{R}$
2 $200 \mathrm{R}$
3 $-200 \mathrm{R}$
4 indeterminate
Thermodynamics

148155 The height of a waterfall is $50 \mathrm{~m}$. If $\mathrm{g}=9.8 \mathrm{~ms}^{-2}$, the difference between the temperature at the top and the bottom of the waterfall is

1 $1.17^{\circ} \mathrm{C}$
2 $2.17^{\circ} \mathrm{C}$
3 $0.117^{\circ} \mathrm{C}$
4 $1.43^{\circ} \mathrm{C}$
Thermodynamics

148157 A 5 mole bubble of Helium gas (monoatomic) is submerged to a certain depth in water which undergoes an increase of $10^{\circ} \mathrm{C}$ in its temperature. How much energy is added to the helium bubble as heat during the increase in its temperature and its consequent expansion?
(Take $\mathrm{R}=8.31 \mathrm{~J} / \mathrm{mol}-\mathrm{K}$ )

1 $625 \mathrm{~J}$
2 $1040 \mathrm{~J}$
3 $1250 \mathrm{~J}$
4 $2325 \mathrm{~J}$
Thermodynamics

148158 An office room contains about 2000 moles of air. The change in the internal energy of this much air when it is cooled from $34^{\circ} \mathrm{C}$ to $24^{\circ} \mathrm{C}$ at a constant pressure of $1.0 \mathrm{~atm}$ is
[Use $\gamma_{\text {air }}=1.4$ and Universal gas constant $=8.314 \mathrm{~J} / \mathrm{mol} \mathrm{K}]$

1 $-1.9 \times 10^{5} \mathrm{~J}$
2 $+1.9 \times 10^{5} \mathrm{~J}$
3 $-4.2 \times 10^{5} \mathrm{~J}$
4 $+0.7 \times 10^{5} \mathrm{~J}$
Thermodynamics

148153 A thermodynamic system undergoes cyclic process $A B C D A$ as shown in fig. The work done by the system in the cycle is-

1 $\mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
2 $2 \mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
3 $\frac{P_{O} V_{O}}{2}$
4 Zero
Thermodynamics

148154 One mole of an ideal monoatomic gas expands till its temperature doubles under the process $\mathrm{V}^{2} \mathrm{~T}=$ constant. If the initial temperature is $\mathbf{4 0 0}$ $\mathrm{K}$, the work done by the gas is

1 $400 \mathrm{R}$
2 $200 \mathrm{R}$
3 $-200 \mathrm{R}$
4 indeterminate
Thermodynamics

148155 The height of a waterfall is $50 \mathrm{~m}$. If $\mathrm{g}=9.8 \mathrm{~ms}^{-2}$, the difference between the temperature at the top and the bottom of the waterfall is

1 $1.17^{\circ} \mathrm{C}$
2 $2.17^{\circ} \mathrm{C}$
3 $0.117^{\circ} \mathrm{C}$
4 $1.43^{\circ} \mathrm{C}$
Thermodynamics

148157 A 5 mole bubble of Helium gas (monoatomic) is submerged to a certain depth in water which undergoes an increase of $10^{\circ} \mathrm{C}$ in its temperature. How much energy is added to the helium bubble as heat during the increase in its temperature and its consequent expansion?
(Take $\mathrm{R}=8.31 \mathrm{~J} / \mathrm{mol}-\mathrm{K}$ )

1 $625 \mathrm{~J}$
2 $1040 \mathrm{~J}$
3 $1250 \mathrm{~J}$
4 $2325 \mathrm{~J}$
Thermodynamics

148158 An office room contains about 2000 moles of air. The change in the internal energy of this much air when it is cooled from $34^{\circ} \mathrm{C}$ to $24^{\circ} \mathrm{C}$ at a constant pressure of $1.0 \mathrm{~atm}$ is
[Use $\gamma_{\text {air }}=1.4$ and Universal gas constant $=8.314 \mathrm{~J} / \mathrm{mol} \mathrm{K}]$

1 $-1.9 \times 10^{5} \mathrm{~J}$
2 $+1.9 \times 10^{5} \mathrm{~J}$
3 $-4.2 \times 10^{5} \mathrm{~J}$
4 $+0.7 \times 10^{5} \mathrm{~J}$
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Thermodynamics

148153 A thermodynamic system undergoes cyclic process $A B C D A$ as shown in fig. The work done by the system in the cycle is-

1 $\mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
2 $2 \mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
3 $\frac{P_{O} V_{O}}{2}$
4 Zero
Thermodynamics

148154 One mole of an ideal monoatomic gas expands till its temperature doubles under the process $\mathrm{V}^{2} \mathrm{~T}=$ constant. If the initial temperature is $\mathbf{4 0 0}$ $\mathrm{K}$, the work done by the gas is

1 $400 \mathrm{R}$
2 $200 \mathrm{R}$
3 $-200 \mathrm{R}$
4 indeterminate
Thermodynamics

148155 The height of a waterfall is $50 \mathrm{~m}$. If $\mathrm{g}=9.8 \mathrm{~ms}^{-2}$, the difference between the temperature at the top and the bottom of the waterfall is

1 $1.17^{\circ} \mathrm{C}$
2 $2.17^{\circ} \mathrm{C}$
3 $0.117^{\circ} \mathrm{C}$
4 $1.43^{\circ} \mathrm{C}$
Thermodynamics

148157 A 5 mole bubble of Helium gas (monoatomic) is submerged to a certain depth in water which undergoes an increase of $10^{\circ} \mathrm{C}$ in its temperature. How much energy is added to the helium bubble as heat during the increase in its temperature and its consequent expansion?
(Take $\mathrm{R}=8.31 \mathrm{~J} / \mathrm{mol}-\mathrm{K}$ )

1 $625 \mathrm{~J}$
2 $1040 \mathrm{~J}$
3 $1250 \mathrm{~J}$
4 $2325 \mathrm{~J}$
Thermodynamics

148158 An office room contains about 2000 moles of air. The change in the internal energy of this much air when it is cooled from $34^{\circ} \mathrm{C}$ to $24^{\circ} \mathrm{C}$ at a constant pressure of $1.0 \mathrm{~atm}$ is
[Use $\gamma_{\text {air }}=1.4$ and Universal gas constant $=8.314 \mathrm{~J} / \mathrm{mol} \mathrm{K}]$

1 $-1.9 \times 10^{5} \mathrm{~J}$
2 $+1.9 \times 10^{5} \mathrm{~J}$
3 $-4.2 \times 10^{5} \mathrm{~J}$
4 $+0.7 \times 10^{5} \mathrm{~J}$
Thermodynamics

148153 A thermodynamic system undergoes cyclic process $A B C D A$ as shown in fig. The work done by the system in the cycle is-

1 $\mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
2 $2 \mathrm{P}_{\mathrm{O}} \mathrm{V}_{\mathrm{O}}$
3 $\frac{P_{O} V_{O}}{2}$
4 Zero
Thermodynamics

148154 One mole of an ideal monoatomic gas expands till its temperature doubles under the process $\mathrm{V}^{2} \mathrm{~T}=$ constant. If the initial temperature is $\mathbf{4 0 0}$ $\mathrm{K}$, the work done by the gas is

1 $400 \mathrm{R}$
2 $200 \mathrm{R}$
3 $-200 \mathrm{R}$
4 indeterminate
Thermodynamics

148155 The height of a waterfall is $50 \mathrm{~m}$. If $\mathrm{g}=9.8 \mathrm{~ms}^{-2}$, the difference between the temperature at the top and the bottom of the waterfall is

1 $1.17^{\circ} \mathrm{C}$
2 $2.17^{\circ} \mathrm{C}$
3 $0.117^{\circ} \mathrm{C}$
4 $1.43^{\circ} \mathrm{C}$
Thermodynamics

148157 A 5 mole bubble of Helium gas (monoatomic) is submerged to a certain depth in water which undergoes an increase of $10^{\circ} \mathrm{C}$ in its temperature. How much energy is added to the helium bubble as heat during the increase in its temperature and its consequent expansion?
(Take $\mathrm{R}=8.31 \mathrm{~J} / \mathrm{mol}-\mathrm{K}$ )

1 $625 \mathrm{~J}$
2 $1040 \mathrm{~J}$
3 $1250 \mathrm{~J}$
4 $2325 \mathrm{~J}$
Thermodynamics

148158 An office room contains about 2000 moles of air. The change in the internal energy of this much air when it is cooled from $34^{\circ} \mathrm{C}$ to $24^{\circ} \mathrm{C}$ at a constant pressure of $1.0 \mathrm{~atm}$ is
[Use $\gamma_{\text {air }}=1.4$ and Universal gas constant $=8.314 \mathrm{~J} / \mathrm{mol} \mathrm{K}]$

1 $-1.9 \times 10^{5} \mathrm{~J}$
2 $+1.9 \times 10^{5} \mathrm{~J}$
3 $-4.2 \times 10^{5} \mathrm{~J}$
4 $+0.7 \times 10^{5} \mathrm{~J}$