Download GTU BE/B.Tech 2018 Winter 7th Sem Old 170501 Chemical Reaction Engineering I Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem Old 170501 Chemical Reaction Engineering I Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (OLD) EXAMINATION ? WINTER 2018
Subject Code: 170501 Date: 03/12/2018

Subject Name: Chemical Reaction Engineering - I

Time: 10:30 AM TO 01:00 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) Give classification of chemical reactions with examples. 07
(b) Differentiate Differential and Integral method of analysis for finding rate of
reaction.
07

Q.2 (a) Discuss and compare various theories for dependency of activation energy on
temperature.
07
(b) Derive rate equation for second order irreversible reaction using integral method
of analysis. Reaction is 2A R
07
OR
(b) Discuss the relationship between C, E and F curve. 07

Q.3 (a) Derive performance equation for ideal batch reactor. 07
(b) Derive equation for the RTD for ideal single CSTR. 07
OR
Q.3 (a) A homogeneous gas reaction A 3R has a reported rate at 215
O
C
-rA = 10
-2
CA
1/2
, [mol/liter sec]
Find the space-time needed for 80% conversion of a 50% A-50% inert feed to a
plug flow reactor operating at 215
O
C and 5 atm (C Ao = 0.0625 mol/liter).
07
(b) Derive equation for space time for recycle reactor. 07

Q.4 (a) Write a short note on equilibrium constants from thermodynamics clearly
indicating the equations.
07
(b) With neat sketches discuss about correct recycle ratio and compare it with too
high and too low recycle ratios for autocatalytic reaction.
07
OR
Q.4 (a) Discuss fractional yield, Overall yield and selectivity for parallel reaction. 07
(b) Discuss qualitative product distribution for reaction in series
A R S.
07

Q.5 (a) Write short note on ?Adiabatic Operation in reactor?. 07
(b) Derive the performance equation for equal sized CSTRs in series. 07
OR

Q.5 (a) Give comparison between ideal plug flow and mixed flow reactor. 07
(b) Write short note on ?Searching for reaction mechanism?. 07

*************

FirstRanker.com - FirstRanker's Choice