Name: _________________________________________, Roll No. __________________
Sarhad University, Peshawar
(Distance Education)
Subject
: Advance Chemical Thermodynamics
Time Allowed: 03 hours
Examination: Final, Spring 2013
Total Marks: 80
NOTE: Question No. 1 is compulsory. Attempt four questions from the rest. All questions carry equal marks.
Mobile phones and other electronic gadgets are not allowed.
Q1. Attempt the following MCQs.
a) A control volume refers to
1.
2.
3.
4.
A fixed region in space
A definite mass
A closed system
An isolated system
b) A system in which there may exchange energy but not mass is known as
1.
2.
3.
4.
Open system
Closed system
Isolated system
Insulated system
c) Which of the following is an example of a closed system?
1.
2.
3.
4.
Scooter engine
Liquid cooling system of an automobile
Boiler in steam power plant
Air compressor
d) Intensive properties are the properties whose magnitude
1.
2.
3.
4.
Depends on the quantity of material involved
Does not depends on the quantity of material involved
Depends on the path followed
None of the above
e) The internal energy of a substance
1.
2.
3.
4.
Can be calculated by the relation E = mc2
Decreases with increase in temperature
Increases with increase in temperature
Remains unaffected with change in temperature
Advance Chemical Thermodynamics - Spring 2013 -
Page 1 of 1
f) The enthalpy (H) of any substance is defined by the mathematical expression
1.
2.
3.
4.
g)
H = U – PV
H = U + PV
H = U + RT
H = V + PU
A system receives 14.5 J of heat and at the same time work is transferred to the surroundings. Which of
the following amount is possible?
1.
2.
3.
4.
14.5 J
2J
20.0 J
15.5 J
h) Boyle’s law for an ideal gas deals with the relationship between
1.
2.
3.
4.
Mass and volume at constant temperature
Pressure and volume at constant temperature
Volume and temperature at constant pressure
Pressure and temperature at constant volume
Q2. Explain p-v and T-v diagrams in detail.
Q3. Discuss different forms of energy including work and heat.
Q4. Explain the phase change process for compressed liquid water to super-heated steam.
Q5. Define and explain 2nd law of thermodynamics with the help of examples.
Q6. Define the following terms,
a) Intensive and Extensive properties
b) Thermodynamic cycle
c) Internal energy and Enthalpy
d) Entropy
Q7. Explain the Carnot cycle in detail with the help of diagrams.
Q8. Discuss the difference between refrigerators and heat pumps.
Advance Chemical Thermodynamics - Spring 2013 -
Page 2 of 1