Download GTU BE/B.Tech 2018 Winter 4th Sem New 2141306 Elements Of Chemical Engg Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-1V (NEW) EXAMINATION - WINTER 2018

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Subject Code:2141306 Date:22/11/2018
Subject Name:Elements of Chemical Engg
Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Differentiate between elementary and non-elementary reaction. 03
(b) Differentiate Single and multiple reactions. 04

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(c) State & explain classification of reactions. 07

Q.2 (a) Define Space time and space velocity. 03
(b) What are the parameters that affects rate of reaction. 04
(c) Temperature dependency from Arrhenius’s law. Explain. 07
OR

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(c) Discuss temperature dependency from thermodynamics. 07

Q.3 (a) Differentiate between (i) Homogeneous Reaction, (ii) Heterogeneous 03
Reaction
(b) Define (i) Rate constant (ii) PFR (iii) Molecularity (iv) Order of reaction. 04
(c) Write a short note on Fixed bed reactor. 07

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OR
Q.3 (a) Write about the advantages and disadvantages of a batch reactor. 03
(b) Describe half-life method for finding the order of reaction. 04
(c) Draw a neat sketch with short note on (i) Continuous reactor. (ii) Mix flow 07
reactor.

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Q.4 (a) Write down only the temperature dependency equation from collision 03
theory for like and unlike molecules:
(b) Differentiate between series and parallel reaction with example. 04
(c) Make a material balance for CSTR. 07
OR

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Q.4 (a) Write a short note on autocatalytic reactors. 03
(b) Explain the second order reaction with example 04
(c) Make a material balance for Ideal batch reactor. 07

Q.5 (a) Enlist & explain the ways to transfer heat. 03
(b) Write a short note on RTD. 04

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(c) Give relation between F and E curves with necessary information. 07
OR
Q.5 (a) Enlist the characteristics of tracer. 03
(b) List the various parameters to be considered for reactor design. 04
(c) Explain Tank-in-series model to represent non-ideal flow. 07

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