Chemical Process Calculations on Chemical Engineering related Questions and Answers - Page 1

Question 1 : There must be no accumulation of mass or energy over the time period of interest in a _________
1. Steady state
2. Unsteady state
3. Closed
4. None of the mentioned
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Question 2 : If 25 J is work is done by a system and same amount of heat is also supplied to the system. What kind of system is it?
1. Steady state
2. Unsteady state
3. Closed
4. None of the mentioned
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Question 3 : If 25 J is work is done on a system and same amount of heat is also supplied. What kind of system is it?
1. Steady state
2. Unsteady state
3. Closed
4. None of the mentioned
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Question 4 : 10 J of heat is supplied to a system and a work of 30 J performed on it. If 50 J of heat is removed from the system, which type of system is it?
1. Steady state
2. Unsteady state
3. Closed
4. None of the mentioned
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Question 5 : 20 J of heat is supplied to a system and a work of 30 J performed on it. If 50 J of heat is removed from the system, which type of system is it?
1. Steady state
2. Unsteady state
3. Closed
4. None of the mentioned
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Question 6 : 25 J of work is done by a steady state system, what is the heat supplied to the system?
1. - 25 J
2. 25 J
3. 20 J
4. - 20 J
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Question 7 : 10 J of heat is removed from a steady state system, what is the work done on the system?
1. - 10 J
2. 10 J
3. - 5 J
4. 5 J
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Question 8 : If x J of work is done on a steady system, what is the heat for the system?
1. + x J
2. -x J
3. 0 J
4. None of the mentioned
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Question 9 : For a steady state system, 10 J of heat is supplied to the system, what is the work done by the system?
1. 10 J
2. 20 J
3. 30 J
4. 40 J
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Question 10 : Change in the internal energy for a steady-state system is always ___________
1. Positive
2. Negative
3. Zero
4. None of the mentioned
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