369168
If \(\mathrm{W}\) is the amount of work done by the system and \(\mathrm{q}\) is the amount of heat supplied to the system, identify the type of the system.
1 Isolated system
2 Closed system
3 Open system
4 System with thermally conducting walls
Explanation:
When amount of heat (q) is given to the system, the system does work (W), i.e. utilises heat but does not exchange matter, thus system is identified as closed system.
CHXI06:THERMODYNAMICS
369169
Assertion : A cup of tea placed in a room is an example of open system. Reason : Transfer of heat and water vapour can take place with the surrounding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An open system has the capacity to exchange or transfer both matter and energy between the system and its surroundings. So, option (1) is correct.
CHXI06:THERMODYNAMICS
369170
What happens when methane undergoes combustion in system A and B respectively?
1 System A : Adiabatic system ; Temperature rises. System B : Diathermic container : Temperature remains same.
2 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature rises.
3 System A : Adiabatic system; Temperature remains same. System B : Diathermic container : Temperature rises.
4 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature remains same.
Explanation:
When methane undergoes combustion, a certain amount of energy is released. In case of adiabatic system (system A), heat cannot be exchanged with surroundings, so temperature of the system rises. But in diathermic container (system B) heat flow can occur to maintain the temperature constant.
JEE - 2023
CHXI06:THERMODYNAMICS
369171
Assertion : For an isolated system, \({\text{q}}\) is zero. Reason : In an isolated system, change in \({\text{U}}\) and \(\mathrm{V}\) is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In an isolated system, where there is no heat exchange with the surroundings \({\text{(q = 0)}}\), the work done \((\mathrm{w})\) is also zero. Therefore, the change in internal energy \({\text{(}}\Delta {\text{U)}}\) is equal to zero. Consequently, for such a system, the change in pressure \((\mathrm{P})\) and volume \((\mathrm{V})\) is zero, as work (w) does not contribute to any changes in the system. So, option (2) is correct.
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CHXI06:THERMODYNAMICS
369168
If \(\mathrm{W}\) is the amount of work done by the system and \(\mathrm{q}\) is the amount of heat supplied to the system, identify the type of the system.
1 Isolated system
2 Closed system
3 Open system
4 System with thermally conducting walls
Explanation:
When amount of heat (q) is given to the system, the system does work (W), i.e. utilises heat but does not exchange matter, thus system is identified as closed system.
CHXI06:THERMODYNAMICS
369169
Assertion : A cup of tea placed in a room is an example of open system. Reason : Transfer of heat and water vapour can take place with the surrounding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An open system has the capacity to exchange or transfer both matter and energy between the system and its surroundings. So, option (1) is correct.
CHXI06:THERMODYNAMICS
369170
What happens when methane undergoes combustion in system A and B respectively?
1 System A : Adiabatic system ; Temperature rises. System B : Diathermic container : Temperature remains same.
2 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature rises.
3 System A : Adiabatic system; Temperature remains same. System B : Diathermic container : Temperature rises.
4 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature remains same.
Explanation:
When methane undergoes combustion, a certain amount of energy is released. In case of adiabatic system (system A), heat cannot be exchanged with surroundings, so temperature of the system rises. But in diathermic container (system B) heat flow can occur to maintain the temperature constant.
JEE - 2023
CHXI06:THERMODYNAMICS
369171
Assertion : For an isolated system, \({\text{q}}\) is zero. Reason : In an isolated system, change in \({\text{U}}\) and \(\mathrm{V}\) is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In an isolated system, where there is no heat exchange with the surroundings \({\text{(q = 0)}}\), the work done \((\mathrm{w})\) is also zero. Therefore, the change in internal energy \({\text{(}}\Delta {\text{U)}}\) is equal to zero. Consequently, for such a system, the change in pressure \((\mathrm{P})\) and volume \((\mathrm{V})\) is zero, as work (w) does not contribute to any changes in the system. So, option (2) is correct.
369168
If \(\mathrm{W}\) is the amount of work done by the system and \(\mathrm{q}\) is the amount of heat supplied to the system, identify the type of the system.
1 Isolated system
2 Closed system
3 Open system
4 System with thermally conducting walls
Explanation:
When amount of heat (q) is given to the system, the system does work (W), i.e. utilises heat but does not exchange matter, thus system is identified as closed system.
CHXI06:THERMODYNAMICS
369169
Assertion : A cup of tea placed in a room is an example of open system. Reason : Transfer of heat and water vapour can take place with the surrounding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An open system has the capacity to exchange or transfer both matter and energy between the system and its surroundings. So, option (1) is correct.
CHXI06:THERMODYNAMICS
369170
What happens when methane undergoes combustion in system A and B respectively?
1 System A : Adiabatic system ; Temperature rises. System B : Diathermic container : Temperature remains same.
2 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature rises.
3 System A : Adiabatic system; Temperature remains same. System B : Diathermic container : Temperature rises.
4 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature remains same.
Explanation:
When methane undergoes combustion, a certain amount of energy is released. In case of adiabatic system (system A), heat cannot be exchanged with surroundings, so temperature of the system rises. But in diathermic container (system B) heat flow can occur to maintain the temperature constant.
JEE - 2023
CHXI06:THERMODYNAMICS
369171
Assertion : For an isolated system, \({\text{q}}\) is zero. Reason : In an isolated system, change in \({\text{U}}\) and \(\mathrm{V}\) is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In an isolated system, where there is no heat exchange with the surroundings \({\text{(q = 0)}}\), the work done \((\mathrm{w})\) is also zero. Therefore, the change in internal energy \({\text{(}}\Delta {\text{U)}}\) is equal to zero. Consequently, for such a system, the change in pressure \((\mathrm{P})\) and volume \((\mathrm{V})\) is zero, as work (w) does not contribute to any changes in the system. So, option (2) is correct.
369168
If \(\mathrm{W}\) is the amount of work done by the system and \(\mathrm{q}\) is the amount of heat supplied to the system, identify the type of the system.
1 Isolated system
2 Closed system
3 Open system
4 System with thermally conducting walls
Explanation:
When amount of heat (q) is given to the system, the system does work (W), i.e. utilises heat but does not exchange matter, thus system is identified as closed system.
CHXI06:THERMODYNAMICS
369169
Assertion : A cup of tea placed in a room is an example of open system. Reason : Transfer of heat and water vapour can take place with the surrounding.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An open system has the capacity to exchange or transfer both matter and energy between the system and its surroundings. So, option (1) is correct.
CHXI06:THERMODYNAMICS
369170
What happens when methane undergoes combustion in system A and B respectively?
1 System A : Adiabatic system ; Temperature rises. System B : Diathermic container : Temperature remains same.
2 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature rises.
3 System A : Adiabatic system; Temperature remains same. System B : Diathermic container : Temperature rises.
4 System A : Adiabatic system ; Temperature falls. System B : Diathermic container : Temperature remains same.
Explanation:
When methane undergoes combustion, a certain amount of energy is released. In case of adiabatic system (system A), heat cannot be exchanged with surroundings, so temperature of the system rises. But in diathermic container (system B) heat flow can occur to maintain the temperature constant.
JEE - 2023
CHXI06:THERMODYNAMICS
369171
Assertion : For an isolated system, \({\text{q}}\) is zero. Reason : In an isolated system, change in \({\text{U}}\) and \(\mathrm{V}\) is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In an isolated system, where there is no heat exchange with the surroundings \({\text{(q = 0)}}\), the work done \((\mathrm{w})\) is also zero. Therefore, the change in internal energy \({\text{(}}\Delta {\text{U)}}\) is equal to zero. Consequently, for such a system, the change in pressure \((\mathrm{P})\) and volume \((\mathrm{V})\) is zero, as work (w) does not contribute to any changes in the system. So, option (2) is correct.