Download GTU BE/B.Tech 2019 Summer 4th Sem New 2141306 Elements Of Chemical Engg Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 4th Sem New 2141306 Elements Of Chemical Engg Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2141306 Date:09/05/2019
Subject Name: Elements of Chemical Engg
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.


Q.1 (a)
Differentiate between elementary and non-elementary reaction.
03
(b)
Enlist the factors affecting the rate of reaction with example.
04
(c)
Give classification of reactions on the basis of thermodynamics and chemical
kinetics.
07
Q.2 (a) Write a brief note on parallel reaction. 03
(b)
Define Space-Time and Space-Velocity for flow reactors.
04
(c)
Write a short note on Fixed bed reactor.
07
OR
(c) Write a short note on PFR. 07
Q.3 (a)
Differentiate between performance equations for constant volume batch reactor
and varying volume batch reactor.
03
(b) Discuss advantages and disadvantages of fluidized bed reactor. 04
(c) Derive the mass balance equation for CSTR. 07
OR
Q.3 (a)
Differentiate between order of reaction and molecularity of reaction.
03
(b) Write a brief note on chemical kinetics. 04
(c) Derive the mass balance equation for Batch reactor. 07
Q.4 (a)
Explain experimental methods for F ? curve.
03
(b) Milk is pressurized if it is heated to 65?C for 30 min but if it is heated to 72?
C, it only needs 15 s for the same result. Find the activation energy of this
sterilization process.
04
(c)
Explain temperature dependency from Arrhenius?s law.
07
OR
Q.4 (a)
Explain experimental methods for C ? Curve.
03
(b) At 27?C, a reaction has a rate constant of 0.010s
?1.
At What temp, would the
reaction be twice as fast? E= 50 KJ/mol. (Assume , Concentration of
reactant and E is unchanged.)
04
(c)
Explain half life approach for estimating reaction order.
07
Q.5 (a)
Differentiate between Ideal flow reactor and Non- Ideal flow reactor.
03
(b)
Write a short note on RTD.
04
(c)
Give explanation on temperature dependency from collision theory.
07
OR

Q.5 (a) Give the Application of Thermodynamics ?s law. 03
(b)
Enlist & explain the ways to transfer heat.
04
(c) Write a short note on measurement of RTD. 07

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