- 1(current)
Q. No.
Subtopic: 2nd & 3rd Law of Thermodynamics |
86%
Level 1: 80%+
NEET - 2022
Hints
The correct option for free expansion of an ideal gas under adiabatic condition is:
1. and
2. and
3. and
4. and
Subtopic: 2nd & 3rd Law of Thermodynamics |
76%
Level 2: 60%+
NEET - 2020
Hints
Under the isothermal condition, a gas at \(300 \mathrm{~K}\) expands from \(0.1 \mathrm{~L}\) to \(0.25 \mathrm{~L}\) against a constant external pressure of 2 bar. The work done by the gas is:
| 1. | \(30 ~\mathrm {J} \) | 2. | \(-30 ~\mathrm{J} \) |
| 3. | \(5~ \mathrm{kJ}\) | 4. | \(25~ \mathrm{J}\) |
Subtopic: 2nd & 3rd Law of Thermodynamics |
81%
Level 1: 80%+
NEET - 2019
Hints
Reversible expansion of an ideal gas under isothermal and adiabatic conditions are shown in the figure:
ABIsothermal expansion
ACAdiabatic expansion
Which of the following options is not correct?
| 1. | \(\Delta S_{\text {isothermal }}>\Delta S_{\text {adiabatic }} \) | 2. | \(T_A=T_B \) |
| 3. | \(W_{\text {isothermal }}>W_{\text {adiabatic }} \) | 4. | \(T_C>T_A\) |
Subtopic: 2nd & 3rd Law of Thermodynamics |
55%
Level 3: 35%-60%
NEET - 2019
Hints
Identify which of the following is the correct option for free expansion of an ideal gas under adiabatic condition.
1. \(\Delta \mathrm{q} \neq 0, \Delta \mathrm{~T}=0, \mathrm{~W}=0 \)
2. \(\Delta \mathrm{q}=0, \Delta \mathrm{~T}=0, \mathrm{~W}=0 \)
3. \(\Delta \mathrm{q}=0, \Delta \mathrm{~T}<0, \mathrm{~W} \neq 0 \)
4. \(\Delta \mathrm{q}=0, \Delta \mathrm{~T} \neq 0, \mathrm{~W}=0\)
1. \(\Delta \mathrm{q} \neq 0, \Delta \mathrm{~T}=0, \mathrm{~W}=0 \)
2. \(\Delta \mathrm{q}=0, \Delta \mathrm{~T}=0, \mathrm{~W}=0 \)
3. \(\Delta \mathrm{q}=0, \Delta \mathrm{~T}<0, \mathrm{~W} \neq 0 \)
4. \(\Delta \mathrm{q}=0, \Delta \mathrm{~T} \neq 0, \mathrm{~W}=0\)
Subtopic: 2nd & 3rd Law of Thermodynamics | First Law of Thermodynamics |
81%
Level 1: 80%+
AIPMT - 2011
Hints
Identify the correct statement regarding entropy:
| 1. | At absolute zero of temperature, the entropy of all crystalline substances is taken to be zero. |
| 2. | At absolute zero of temperature, the entropy of a perfectly crystalline substance is positive. |
| 3. | At absolute zero of temperature, the entropy of a perfectly crystalline substance is taken to be zero. |
| 4. | At 0 °C , the entropy of a perfectly crystalline substance is taken to be zero. |
Subtopic: 2nd & 3rd Law of Thermodynamics |
70%
Level 2: 60%+
AIPMT - 1998
Hints
- 1(current)
Q. No.
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