Indian Forest Examination .••••••.
SI. No. 6 81 . · j VSF-L-URB j
CHEMICAL ENGINEERING
Paper II
I Time Allowed: Three Hours j jMaximum Marks: 200 j
INSTRUCTIONS
Candidates should altempt question nos. 1 and 5
which are compulsory, and any THREE of the
remaining questions, selecting at least ONE
question from each Section.
All questions cany equal marks. Marks
allotted to each part o[a question are
indicated against each.
.
. ·Answers must be writte11 in ENGLISH only.
Assume suitable data, if considered necessary,
and indicate the same clearly. Symb 0ls and
notations have their usital meanings.
Neat sketches may be drawn, wherever required.
(Contd.)
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1. Answer any four of the following (maximum
150 words each): 4xl0=40
(a)Write a note on Proximate and Ultimate
analyses of coal.
(b)Give significance of the terms 'fugacity',
'activity' and 'chemical potential'.
(c)'Entropy of the Universe is ever increasing'. Explain.
(d)Explain the concepts of 'Activation Energy'
and 'Frequency Factor' and significance of
Arrhenius Equation.
(e)Discuss the Advantages and Disadvantages of
fixed-bed and fluidised-bed catalytic reactors.

2.(a)A fuel gas has the following composition by volume: 20
CO:30%
and N2:13%.
What is the composition of flue gases formed
by burning this gas with 30% excess air
Assume complete combustion to take place.
gaseous mixture has the following composition by weight: 20

C2H6:15% and N2:29%.
Express the composition of this gaseous
mixture by mol% and vol%.
(Atomic wts

3.(a)What are the 'ideal reactors'? What are the
idealisations assumed for these reactors 15
(b)Derive a Performance Equation for an ideal
plug-flow gaseous phase reactor. 15
(c)Give criteria for vapour-liquid equilibria. 10

4.(a)What is the difference between ideal gas law
and van der Waal's Equation of State
Elaborate your answer. 20
(b)Define Free Energy Internal Energy
Enthalpy and Total work function
Discuss the inter-relation of these energy
properties and physical significance of the
same. 20
Section
5. Answer any four of the following :(maximum 150 words each) 4xl0=40
List various raw materials that could be used
for production of ethyl alcohol. Discuss
chemistry of each of these processes.
(b)Explain cracking and reforming of petroleum fractions.
(c)What are the Green House gases Why they
are called so How exactly they contribute to global warming
(d)What are the important techniques used to dispose off industrial solid wastes Discuss
any two of them in details.
(e)Write a note on PERT /CPM charts and their utility.

6.(a)What are the various raw materials/feedstocks
used in India to produce hydrogen required in
the manufacture of ammonia Give merits and
demerits of each of them. 20
(b)Explain how LDPE is manufactured. Give its
flow sheet. Also compare its properties with
that of HDPE. 20

7.(a)Discuss briefly the important Environmental
legislations enacted in India covering Air,Water and Environment. 20
(b)Discuss briefly some important SPM (Sus-·
pended Particulate Matter) removal techniques
used to treat gaseous effluents in the Chemical
Industry. 20

8.(a)Define fixed capital and working capital. How
do you estimate fixed and working capital
requirements for a chemical process plant? 20
(b)What is depreciation Give various methods
of its calculation along with salient features of
each of the method. 20