148372
In a cyclic process, the amount of heat given to a system is equal to
1 net increase in internal energy
2 net work done by the system
3 net decrease in internal energy
4 net change in volume
5 net change in pressure
Explanation:
B Heat equation, $\Delta \mathrm{Q}=\Delta \mathrm{U}+\Delta \mathrm{W}$ $\Delta \mathrm{U}=0 \quad \text { [cyclic process] }$ $\Delta \mathrm{Q}=\Delta \mathrm{W}$ The amount of heat given to a system is equal to net work done by the system.
Kerala CEE- 2013
Thermodynamics
148383
A sample of gas expands from volume $V_{1}$ to $V_{2}$. The amount of work done by the gas is greatest when the expansion is
1 adiabatic
2 isobaric
3 isothermal
4 Equal in all above cases
Explanation:
B For expansion process, P-V diagram gives work done. Area is maximum under the isobaric curve. So, work done is maximum during an isobaric expansion curve. $\mathrm{W}_{\text {isobaric }}>\mathrm{W}_{\text {isothermal }}>\mathrm{W}_{\text {adiabatic }}$
BITSAT-2009
Thermodynamics
148385
Work done by 0.1 mole of gas at $27^{\circ} \mathrm{C}$ when it expands to double its volume at constant pressure is (assume $R=2 \mathrm{cal} / \mathrm{mol}-\mathrm{K}$ )
148388
In the Carnot engine when the heat is taken from the source, then the temperature of the source
1 remains constant
2 does not remain constant
3 decreases
4 increases
Explanation:
A In the Carnot engine when the heat is taken from the source, then the temperature of the source remains constant because source and sink are thermostats maintained at particular constant temperature.
148372
In a cyclic process, the amount of heat given to a system is equal to
1 net increase in internal energy
2 net work done by the system
3 net decrease in internal energy
4 net change in volume
5 net change in pressure
Explanation:
B Heat equation, $\Delta \mathrm{Q}=\Delta \mathrm{U}+\Delta \mathrm{W}$ $\Delta \mathrm{U}=0 \quad \text { [cyclic process] }$ $\Delta \mathrm{Q}=\Delta \mathrm{W}$ The amount of heat given to a system is equal to net work done by the system.
Kerala CEE- 2013
Thermodynamics
148383
A sample of gas expands from volume $V_{1}$ to $V_{2}$. The amount of work done by the gas is greatest when the expansion is
1 adiabatic
2 isobaric
3 isothermal
4 Equal in all above cases
Explanation:
B For expansion process, P-V diagram gives work done. Area is maximum under the isobaric curve. So, work done is maximum during an isobaric expansion curve. $\mathrm{W}_{\text {isobaric }}>\mathrm{W}_{\text {isothermal }}>\mathrm{W}_{\text {adiabatic }}$
BITSAT-2009
Thermodynamics
148385
Work done by 0.1 mole of gas at $27^{\circ} \mathrm{C}$ when it expands to double its volume at constant pressure is (assume $R=2 \mathrm{cal} / \mathrm{mol}-\mathrm{K}$ )
148388
In the Carnot engine when the heat is taken from the source, then the temperature of the source
1 remains constant
2 does not remain constant
3 decreases
4 increases
Explanation:
A In the Carnot engine when the heat is taken from the source, then the temperature of the source remains constant because source and sink are thermostats maintained at particular constant temperature.
148372
In a cyclic process, the amount of heat given to a system is equal to
1 net increase in internal energy
2 net work done by the system
3 net decrease in internal energy
4 net change in volume
5 net change in pressure
Explanation:
B Heat equation, $\Delta \mathrm{Q}=\Delta \mathrm{U}+\Delta \mathrm{W}$ $\Delta \mathrm{U}=0 \quad \text { [cyclic process] }$ $\Delta \mathrm{Q}=\Delta \mathrm{W}$ The amount of heat given to a system is equal to net work done by the system.
Kerala CEE- 2013
Thermodynamics
148383
A sample of gas expands from volume $V_{1}$ to $V_{2}$. The amount of work done by the gas is greatest when the expansion is
1 adiabatic
2 isobaric
3 isothermal
4 Equal in all above cases
Explanation:
B For expansion process, P-V diagram gives work done. Area is maximum under the isobaric curve. So, work done is maximum during an isobaric expansion curve. $\mathrm{W}_{\text {isobaric }}>\mathrm{W}_{\text {isothermal }}>\mathrm{W}_{\text {adiabatic }}$
BITSAT-2009
Thermodynamics
148385
Work done by 0.1 mole of gas at $27^{\circ} \mathrm{C}$ when it expands to double its volume at constant pressure is (assume $R=2 \mathrm{cal} / \mathrm{mol}-\mathrm{K}$ )
148388
In the Carnot engine when the heat is taken from the source, then the temperature of the source
1 remains constant
2 does not remain constant
3 decreases
4 increases
Explanation:
A In the Carnot engine when the heat is taken from the source, then the temperature of the source remains constant because source and sink are thermostats maintained at particular constant temperature.
148372
In a cyclic process, the amount of heat given to a system is equal to
1 net increase in internal energy
2 net work done by the system
3 net decrease in internal energy
4 net change in volume
5 net change in pressure
Explanation:
B Heat equation, $\Delta \mathrm{Q}=\Delta \mathrm{U}+\Delta \mathrm{W}$ $\Delta \mathrm{U}=0 \quad \text { [cyclic process] }$ $\Delta \mathrm{Q}=\Delta \mathrm{W}$ The amount of heat given to a system is equal to net work done by the system.
Kerala CEE- 2013
Thermodynamics
148383
A sample of gas expands from volume $V_{1}$ to $V_{2}$. The amount of work done by the gas is greatest when the expansion is
1 adiabatic
2 isobaric
3 isothermal
4 Equal in all above cases
Explanation:
B For expansion process, P-V diagram gives work done. Area is maximum under the isobaric curve. So, work done is maximum during an isobaric expansion curve. $\mathrm{W}_{\text {isobaric }}>\mathrm{W}_{\text {isothermal }}>\mathrm{W}_{\text {adiabatic }}$
BITSAT-2009
Thermodynamics
148385
Work done by 0.1 mole of gas at $27^{\circ} \mathrm{C}$ when it expands to double its volume at constant pressure is (assume $R=2 \mathrm{cal} / \mathrm{mol}-\mathrm{K}$ )
148388
In the Carnot engine when the heat is taken from the source, then the temperature of the source
1 remains constant
2 does not remain constant
3 decreases
4 increases
Explanation:
A In the Carnot engine when the heat is taken from the source, then the temperature of the source remains constant because source and sink are thermostats maintained at particular constant temperature.
