Janardan Rai Nagar Rajasthan Vidyapeeth 2006 B.Tech Chemical Engineering THERMODYNAMICS - I - Question Paper

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)

	(5)

 

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

	(10)

 

Group B (25 Marks)

 

Answer any three questions (Questions 6 is compulsory)

	(5)

 

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 tp)_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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