Advance Chemical Thermodynamics Universities Past Papers

Past Guess Paper of Advance Chemical Thermodynamics Universities Past Papers.

Guess Past Paper 1 : Advance Chemical Thermodynamics

University Name – Confidential

NOTE: Q.1 is compulsory, attempt any four questions from the remaining. All questions carry equal marks. Phones and other Electronic Gadgets are not allowed.

Paper :Advance Chemical Thermodynamics

Time Allowed: 3 hours

Examination:   Final, Fall – 2020

Total Marks:    70, Passing Marks (35)

Advance Chemical Thermodynamics Past Papers
Advance Chemical Thermodynamics Past Papers

Q.1      Discuss Gibbs free energy. Derive an equation for it. Also state how it tells about the spontaneity of a

reaction.

Q.2      Briefly discuss Diesel Engine in detail.

Q.3      Complete the following table:

Component Composition

y

Molecular Weight

Mi

No. of Moles

y*Mi

Mass Fraction

X= y *Mi/Mm

N2 0.60 28    
CO2 0.40 44    

 

Q.4      An engine that has an efficiency of 25% takes in 200J of heat during each cycle. Calculate the amount of

work performed by this engine.

Q.5     Write the working quation and Maxwell’s relation using a mnemonic device.

Q.6      Discuss the Carnot cycle in detail. Also, draw its PV and TS diagram.

Q.7      Define the following with examples (if necessary)

  1. a) Chemical Potential
  2. b) Partial molar volumes

Q.8      Define and explain

  1. i) Throttling processes
  2. ii) Ejector

Guess Past Paper 2 : Advance Chemical Thermodynamics

University Name – Confidential

NOTE: Q.1 is compulsory, attempt any four questions from the remaining. All questions carry equal marks. Phones and other Electronic Gadgets are not allowed.

Paper :Advance Chemical Thermodynamics

Time Allowed: 3 hours

Examination:   Final, Spring- 2020

Total Marks:    70, Passing Marks (35)

Q1: Choose the correct options. Each correct option carries 2 marks while 1 mark will be deducted on picking the wrong option.

First law of thermodynamics is based on the
A. law of conservation of mass B. law of conservation of energy
C. law of equipartion of energy D. law of conservation of momentum
A control volume refers to
A. fixed region is space B. a definite mass
C. a closed system D. an isolated system
A system in which there may exchange energy but not mass is known as
A. open system B. closed system C. isolated system D. insulated system
A system is called open system if
A. only the energy crosses the system boundary B. both energy and mass cross the system boundary C. neither energy nor mass crosses the system boundary
D. only the mass crosses the system boundary
5. During preliminary test run of an engine for 7 hours cycles if the engine stops after operating for 5 hours then
A. The engine is rejected B. The engine is again run for 7 hours
C. The engine in run for balance 2 hours D. The engine is removed and another piece tested
E. None of the above
If in a compression ignition engine the noise level is to be reduced, the design features which will not be affected are
A. Combustion system B. Exhaust muffling C. Intake muffling
D. Fuel injection equipment E. None of the above
A diesel engine is to be redesigned to improve the overload capacity. The design feature which will be influenced is
A. Size of fuel injection equipment B. Lubrication C. Air capacity of cylinder
D. Cooling water velocity E. All of the above
In order to achieve maximum possible fuel economy the design features which will be affected are
A. Volumetric efficiency B. Compression ratio C. Method of charging
D. Atomization E. None of the above
In a diesel engine the injection pressure is of the order of
A. 40 kg/cm2 B. 100 kg/cm2 C. 500 kg/cm2 D. 1000 kg/cm2
E. 1500 kg/cm2
In a SI engine the advancing of spark timing will
A. Increase knocking tendency B. Reduce knocking tendency C. Not have any effect
D. Depends on intensity of spark only E .None of the above

In a compression ignition engine higher combustion chamber wall temperature will
A. Reduce knocking tendency B. Increase knocking tendency C. Have no effect
D. Reduce exhaust temperature E. None of the above
12. The thermal efficiency of a dual cycle engine with fixed compression ratio and fixed quantity of het and with increase in pressure ratio, will
A. Increase B. Decrease C. Not change D. Depends on another factors
E. None of the above
In compression ignition engine fuel ignition accelerators are added to
A. Reduce combustion knock B. Accelerate combustion knock
C. Reduce combustion chamber temp D. Increase delay period
E. None of the above
Which of the following is a state function
A. Temperature B. Pressure C. Specific volume D. Work

Q2:      Discuss energy balance for steady state flow processes.

Q3:      (a) What do you mean by throttling processes?

(b) Differentiate between pump, compressor and turbine.

Q4:      Derive a general equation for chemical reaction equilibrium.

Q5:      What do you mean by diesel engine? Explain with the help of P-V and T-S diagrams.

Q6:      The air entering a turbojet engine experiences a pressure increase as it flows through the diffuser   and another pressure increase as it flows through the compressor. How are these pressure          increases achieved?

Q7:      (a) Discuss effect of temperature on equilibrium constant.

(b) Explain steam power plant.

Q8:      Write short notes on any two of the following.

  1. a) Phase Rule
  2. b) Fugacity
  3. c) Gibbs Free Energy
Prof. Fazal Rehman Shamil
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