Question 11 : For an isolated system, internal energy
1. Can change
2. Can`t Change
3. May change
4. None of the mentioned
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Question 12 : Specific internal energy is internal energy per unit ________ of the system.
1. Mass
2. Mole
3. Volume
4. None of the mentioned
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Question 13 : 2 Kg of steam that contains an internal energy of 20 J/Kg, if 50 J of heat is supplied to the system, what is the resultant internal energy of the system?
1. 45 J/Kg
2. 40 J/Kg
3. 35 J/Kg
4. 20 J/Kg
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Question 14 : 1 Kg of steam that contains an internal energy of 10 J/Kg, if 10 J of heat is supplied to the system, what is the resultant internal energy of the system?
1. 10 J/ Kg
2. 20 J/Kg
3. 30 J/Kg
4. 40 J/Kg
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Question 15 : A system does a work of 15 J and the change in internal energy of the system is 10 J, what is the heat supplied to the system?
1. - 15 J
2. 15 J
3. - 25 J
4. 25 J
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Question 16 : 20 J of heat is supplied to a system and change in internal energy of the system is 10 J. If 2 J of heat is taken out then how much was work done on the system?
1. -2 J
2. -4 J
3. -6 J
4. -8 J
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Question 17 : 25 J of heat is supplied to a system and work done by the system is 10 J. What is the change in internal energy of the system?
1. 10 J
2. 15 J
3. 25 J
4. 35 J
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Question 18 : If work done on a system is 20 J and a heat of 15 J is taken out, what is the change in internal energy of the system?

1. 5 J
2. 10 J
3. 20 J
4. 30 J
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Question 19 : 25 J of heat is supplied to a system and work done by the system is 15 J. What is the change in internal energy of the system?
1. 10 J
2. 20 J
3. 25 J
4. 35 J
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Question 20 : 20 J of heat is supplied to the system and work done on the system is 15 J. What is the change in internal energy of the system?
1. 15 J
2. 20 J
3. 25 J
4. 35 J
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