Janardan Rai Nagar Rajasthan Vidyapeeth 2006 B.Tech Chemical Engineering THERMODYNAMICS - I - Question Paper
JRN Rajasthan Vidyapeeth University
CHEMICAL ENGINEERING
SEMESTER 5
CHEMICAL ENGINEERING THERMODYNAMICS - I
Model Question Paper
BTCH3 CHEMICAL ENGINEERING THERMODYNAMICS - I
Time : 3 hrs Maximum marks : 75
Instruction: 1.
1. Question paper is divided into Group A, Group B and Group C
2. Each Group is 25 Marks
3. Figure to the right in bracket indicates marks.
4. Good Handwriting is expected
5. Assume suitable data if necessary.
Group A (25 Marks)
Answer any three questions (Question 1 is compulsory)
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Q.1 Explain Macroscopic and Microscopic approaches.
(10)
Q.2 Write the equations of the following
i. Benedict-Webb-Rubin equation of the state
ii. Redlich- Kwong equation of the state
iii. Vivial equation of State
iv. Peng-Robinson equation of State
(10)
Q.3 Explain the following terms
i System iv State
ii Surroundings v Energy and Types of energies
iii Property
Q.4 Explain control volume analysis
(10)
Q.5 Derive Mawells Relation
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Group B (25 Marks)
Answer any three questions (Questions 6 is compulsory)
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Q.6 Define the second law of thermodynamics and explain Kelvin-plank statement
and Clausius statement
Q.7. State and prove Carnot theorem
(10)
Q.8 Dry saturated steam at 3 bars enters a reversible and
adiabatic nozzle
with negligible velocity and leaves at 2 bar. Calculate the exit velocity of steam.
(10)
Q.9 It is desired to raise temp of 1 kmol CO2
at constant pressure from 298K to
600K. a) Determine the isobaric mean molar heat capacity of CO2 in temperature
298K to 600K. b) Determine the amount of energy to be transferred as heat.
Q.10. State and prove clausius inequality
(10)
Group C (25 Marks)
All Questions are Compulsory.
Q.11 Fill in the blanks ( each question carry 2 marks)
i. Thermodynamics deals with ________ and __________
ii. The sum of the energy associated with microscopic modes is called ________
iii. A process of which system is restored to its initial stage is called _________
iv. Region enclosed by an imaginary envelope enter and leave is called __________
v. A cyclically operating device for the continuous conversion of internal energy of matter into work is called __________
Q.11 Multiple choice question. (Each question carry 2 marks)
(i) Which of the following is an extensive property of a system?
a) Heat Energy b) Molal heat capacity
c) Pressure d) Concentration
(ii) First law of thermodynamics states that ____
a) dQ=dE+dW b) dQ=dE-dW c) dE=dQ+dW d)dW=dQ+dE
(iii) In adiabatic process
a) Heat Transfer is Zero b) Temperature change is Zero
c) work done is a path function d) Enthalpy remains constant
(iv) Efficiency of a Carnot engine working between temperature T1 and T2 is ________
a) T2-T1/ T2 b) T2-T1/ T1
c) T1-T2/ T2 d) T1-T2/ T1
(v) During the phase transition ____ changes
a) Pressure b) Volume c) Temperature d) all a, b, c
Q.11 True or false (each question carry 1 marks).
i Joule Thomson co-efficient is defined as tp)H
ii Equation that relates pressure, volume and temperature of gas is called equation of state
iii Second law of thermodynamics deals with the direction of energy transfer
iv Entropy is a thermodynamic property of a system
v III law of thermodynamics is concerned with mass transfer
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Earning: Approval pending. |