NEET Test Series from KOTA - 10 Papers In MS WORD
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Thermodynamics
148695
Entropy of the universe tends to be
1 zero
2 maximum
3 minimum
4 constant
Explanation:
B Entropy of the universe increases, hence it tends to be maximum.
SRMJEEE - 2014
Thermodynamics
148687
During phase change, entropy
1 remains constant
2 always increases
3 always decreases
4 may increase or decrease
Explanation:
D The entropy of a system undergoing a phase transition increases if the phase transition is towards higher internal energy and decreases if the phase transition is towards lower internal energy therefore during phase change entropy of the system may increase or decrease.
AP EAMCET (22.09.2020) Shift-II
Thermodynamics
148688
For which of the following processes, entropy change is zero?
1 Isobaric
2 Isothermal
3 Adiabatic
4 Isochoric
Explanation:
C In adiabatic process, the entropy change will be zero. There will be no heat transfer for adiabatic process i.e. $\Delta \mathrm{Q}=0$ $\Delta \mathrm{S}=\frac{\Delta \mathrm{Q}}{\mathrm{T}}=0$
CG PET- 2017
Thermodynamics
148689
The theory of refrigerator is based on
1 Joule-Thomson effect
2 Newtons' particle theory
3 Joule's effect
4 None of the above
Explanation:
D The theory of refrigerator is based on second law of thermodynamics. According to the second law of thermodynamics "it is impossible for a self acting machine unless energy is provided by any external agency to transfer heat from a body having lower temperature to high temperature.
B Entropy of the universe increases, hence it tends to be maximum.
SRMJEEE - 2014
Thermodynamics
148687
During phase change, entropy
1 remains constant
2 always increases
3 always decreases
4 may increase or decrease
Explanation:
D The entropy of a system undergoing a phase transition increases if the phase transition is towards higher internal energy and decreases if the phase transition is towards lower internal energy therefore during phase change entropy of the system may increase or decrease.
AP EAMCET (22.09.2020) Shift-II
Thermodynamics
148688
For which of the following processes, entropy change is zero?
1 Isobaric
2 Isothermal
3 Adiabatic
4 Isochoric
Explanation:
C In adiabatic process, the entropy change will be zero. There will be no heat transfer for adiabatic process i.e. $\Delta \mathrm{Q}=0$ $\Delta \mathrm{S}=\frac{\Delta \mathrm{Q}}{\mathrm{T}}=0$
CG PET- 2017
Thermodynamics
148689
The theory of refrigerator is based on
1 Joule-Thomson effect
2 Newtons' particle theory
3 Joule's effect
4 None of the above
Explanation:
D The theory of refrigerator is based on second law of thermodynamics. According to the second law of thermodynamics "it is impossible for a self acting machine unless energy is provided by any external agency to transfer heat from a body having lower temperature to high temperature.
B Entropy of the universe increases, hence it tends to be maximum.
SRMJEEE - 2014
Thermodynamics
148687
During phase change, entropy
1 remains constant
2 always increases
3 always decreases
4 may increase or decrease
Explanation:
D The entropy of a system undergoing a phase transition increases if the phase transition is towards higher internal energy and decreases if the phase transition is towards lower internal energy therefore during phase change entropy of the system may increase or decrease.
AP EAMCET (22.09.2020) Shift-II
Thermodynamics
148688
For which of the following processes, entropy change is zero?
1 Isobaric
2 Isothermal
3 Adiabatic
4 Isochoric
Explanation:
C In adiabatic process, the entropy change will be zero. There will be no heat transfer for adiabatic process i.e. $\Delta \mathrm{Q}=0$ $\Delta \mathrm{S}=\frac{\Delta \mathrm{Q}}{\mathrm{T}}=0$
CG PET- 2017
Thermodynamics
148689
The theory of refrigerator is based on
1 Joule-Thomson effect
2 Newtons' particle theory
3 Joule's effect
4 None of the above
Explanation:
D The theory of refrigerator is based on second law of thermodynamics. According to the second law of thermodynamics "it is impossible for a self acting machine unless energy is provided by any external agency to transfer heat from a body having lower temperature to high temperature.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Thermodynamics
148695
Entropy of the universe tends to be
1 zero
2 maximum
3 minimum
4 constant
Explanation:
B Entropy of the universe increases, hence it tends to be maximum.
SRMJEEE - 2014
Thermodynamics
148687
During phase change, entropy
1 remains constant
2 always increases
3 always decreases
4 may increase or decrease
Explanation:
D The entropy of a system undergoing a phase transition increases if the phase transition is towards higher internal energy and decreases if the phase transition is towards lower internal energy therefore during phase change entropy of the system may increase or decrease.
AP EAMCET (22.09.2020) Shift-II
Thermodynamics
148688
For which of the following processes, entropy change is zero?
1 Isobaric
2 Isothermal
3 Adiabatic
4 Isochoric
Explanation:
C In adiabatic process, the entropy change will be zero. There will be no heat transfer for adiabatic process i.e. $\Delta \mathrm{Q}=0$ $\Delta \mathrm{S}=\frac{\Delta \mathrm{Q}}{\mathrm{T}}=0$
CG PET- 2017
Thermodynamics
148689
The theory of refrigerator is based on
1 Joule-Thomson effect
2 Newtons' particle theory
3 Joule's effect
4 None of the above
Explanation:
D The theory of refrigerator is based on second law of thermodynamics. According to the second law of thermodynamics "it is impossible for a self acting machine unless energy is provided by any external agency to transfer heat from a body having lower temperature to high temperature.