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Consider the following statements:
1. Boiling of water from a heat source at the same boiling temperature.
2. Theoretical isothermal compression of a gas.
3. Theoretical polytropic compression process with heat rejection to atmosphere.
4. Diffusion of two ideal gases into each other at constant pressure and temperature.
Which of these processes are irreversible?
- a)1, 2, 3 and 4
- b)1 and 4 only
- c)2, 3 and 4 only
- d)3 and 4 only
Correct answer is option 'D'. Can you explain this answer?
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Consider the following statements:1. Boiling of water from a heat sour...
Any natural process carried out with a finite temperature gradient is an
irreversible process. All spontaneous processes are irreversible. Statement -4 is a spontaneous process.
irreversible process. All spontaneous processes are irreversible. Statement -4 is a spontaneous process.
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Consider the following statements:1. Boiling of water from a heat sour...
Irreversible processes refer to processes that cannot be reversed or undone without incurring some loss or irretrievable changes in the system or its surroundings. In other words, irreversible processes are characterized by the generation of entropy and the inability to restore the system to its original state.
Let's analyze each statement to determine which processes are irreversible.
1. Boiling of water from a heat source at the same boiling temperature:
- This process is reversible because it can be undone by removing the heat source or reducing the temperature. When water boils, it undergoes a phase change from liquid to vapor, but if the heat source is removed or the temperature is reduced, the vapor can condense back into liquid water.
2. Theoretical isothermal compression of a gas:
- Isothermal compression means that the temperature of the gas remains constant during the compression process. This process is reversible because if the compression is done slowly and in equilibrium, the gas can be expanded isothermally to its original state.
3. Theoretical polytropic compression process with heat rejection to the atmosphere:
- A polytropic process is described by the equation PV^n = constant, where n is a constant. Heat rejection to the atmosphere implies that heat is transferred from the system to the surroundings. This process is irreversible because heat transfer to the atmosphere results in an increase in entropy and irreversible changes in the system.
4. Diffusion of two ideal gases into each other at constant pressure and temperature:
- Diffusion is a process of spontaneous mixing of particles. In this case, the diffusion of two ideal gases into each other occurs at constant pressure and temperature. This process is irreversible because it leads to an increase in entropy and the mixing of the gases cannot be undone without external intervention.
Based on the analysis of each statement, it can be concluded that statements 3 and 4 describe irreversible processes. Therefore, the correct answer is option D) 3 and 4 only.
Let's analyze each statement to determine which processes are irreversible.
1. Boiling of water from a heat source at the same boiling temperature:
- This process is reversible because it can be undone by removing the heat source or reducing the temperature. When water boils, it undergoes a phase change from liquid to vapor, but if the heat source is removed or the temperature is reduced, the vapor can condense back into liquid water.
2. Theoretical isothermal compression of a gas:
- Isothermal compression means that the temperature of the gas remains constant during the compression process. This process is reversible because if the compression is done slowly and in equilibrium, the gas can be expanded isothermally to its original state.
3. Theoretical polytropic compression process with heat rejection to the atmosphere:
- A polytropic process is described by the equation PV^n = constant, where n is a constant. Heat rejection to the atmosphere implies that heat is transferred from the system to the surroundings. This process is irreversible because heat transfer to the atmosphere results in an increase in entropy and irreversible changes in the system.
4. Diffusion of two ideal gases into each other at constant pressure and temperature:
- Diffusion is a process of spontaneous mixing of particles. In this case, the diffusion of two ideal gases into each other occurs at constant pressure and temperature. This process is irreversible because it leads to an increase in entropy and the mixing of the gases cannot be undone without external intervention.
Based on the analysis of each statement, it can be concluded that statements 3 and 4 describe irreversible processes. Therefore, the correct answer is option D) 3 and 4 only.
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Consider the following statements:1. Boiling of water from a heat source at the same boiling temperature.2. Theoretical isothermal compression of a gas.3. Theoretical polytropic compression process with heat rejection to atmosphere.4. Diffusion of two ideal gases into each other at constant pressure and temperature.Which of these processes are irreversible?a)1, 2, 3 and 4b)1 and 4 onlyc)2, 3 and 4 onlyd)3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer?
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Consider the following statements:1. Boiling of water from a heat source at the same boiling temperature.2. Theoretical isothermal compression of a gas.3. Theoretical polytropic compression process with heat rejection to atmosphere.4. Diffusion of two ideal gases into each other at constant pressure and temperature.Which of these processes are irreversible?a)1, 2, 3 and 4b)1 and 4 onlyc)2, 3 and 4 onlyd)3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following statements:1. Boiling of water from a heat source at the same boiling temperature.2. Theoretical isothermal compression of a gas.3. Theoretical polytropic compression process with heat rejection to atmosphere.4. Diffusion of two ideal gases into each other at constant pressure and temperature.Which of these processes are irreversible?a)1, 2, 3 and 4b)1 and 4 onlyc)2, 3 and 4 onlyd)3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. Boiling of water from a heat source at the same boiling temperature.2. Theoretical isothermal compression of a gas.3. Theoretical polytropic compression process with heat rejection to atmosphere.4. Diffusion of two ideal gases into each other at constant pressure and temperature.Which of these processes are irreversible?a)1, 2, 3 and 4b)1 and 4 onlyc)2, 3 and 4 onlyd)3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer?.
Consider the following statements:1. Boiling of water from a heat source at the same boiling temperature.2. Theoretical isothermal compression of a gas.3. Theoretical polytropic compression process with heat rejection to atmosphere.4. Diffusion of two ideal gases into each other at constant pressure and temperature.Which of these processes are irreversible?a)1, 2, 3 and 4b)1 and 4 onlyc)2, 3 and 4 onlyd)3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following statements:1. Boiling of water from a heat source at the same boiling temperature.2. Theoretical isothermal compression of a gas.3. Theoretical polytropic compression process with heat rejection to atmosphere.4. Diffusion of two ideal gases into each other at constant pressure and temperature.Which of these processes are irreversible?a)1, 2, 3 and 4b)1 and 4 onlyc)2, 3 and 4 onlyd)3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. Boiling of water from a heat source at the same boiling temperature.2. Theoretical isothermal compression of a gas.3. Theoretical polytropic compression process with heat rejection to atmosphere.4. Diffusion of two ideal gases into each other at constant pressure and temperature.Which of these processes are irreversible?a)1, 2, 3 and 4b)1 and 4 onlyc)2, 3 and 4 onlyd)3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer?.
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