- 1(current)
Q. No.The work done during reversible isothermal expansion of one mole of hydrogen gas at 25°C from pressure of 20 atmosphere to 10 atmosphere is :
( Given R = 2.0 cal K-1 mol-1)
1. -413.14 calories
2. 413.14 calories
3. 100 calories
4. 0 calorie
( Given R = 2.0 cal K-1 mol-1)
1. -413.14 calories
2. 413.14 calories
3. 100 calories
4. 0 calorie
Subtopic: First Law of Thermodynamics |
63%
From NCERT
NEET - 2024
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Choose the correct statement for the work done in the expansion and heat absorbed or released when 5 litres of an ideal gas at 10 atmospheric pressure isothermally expands into vacuum until the volume is 15 litres:
1. Both the heat and work done will be greater than zero.
2. Heat absorbed will be less than zero and work done will be positive.
3. Work done will be zero and heat will also be zero.
4. Work done will be greater than zero and heat will remain zero.
1. Both the heat and work done will be greater than zero.
2. Heat absorbed will be less than zero and work done will be positive.
3. Work done will be zero and heat will also be zero.
4. Work done will be greater than zero and heat will remain zero.
Subtopic: First Law of Thermodynamics |
64%
From NCERT
NEET - 2024
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The work done when 1 mole of gas expands reversibly and isothermally from a pressure of 5 atm to 1 atm at 300 K is:
(Given log 5 = 0.6989 and R = 8.314 J K-1 mol-1)
1. zero J
2. 150 J
3. +4014.6 J
4. -4014.6 J
Subtopic: First Law of Thermodynamics |
69%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
One mole of an ideal gas at 300 K is expanded isothermally from 1 L to 10 L volume. \(\Delta U\) for this process is:
(Use R = 8.314 J K–1 mol–1)
(Use R = 8.314 J K–1 mol–1)
| 1. | 1260 J | 2. | 2520 J |
| 3. | 5040 J | 4. | 0 J |
Subtopic: First Law of Thermodynamics |
78%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
An ideal gas expands isothermally from at 300 K against a constant pressure of . The work done by the gas is:
| 1. | +270 kJ | 2. | –900 J |
| 3. | +900 kJ | 4. | –900 kJ |
Subtopic: First Law of Thermodynamics |
70%
From NCERT
NEET - 2019
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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Q. No.
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