gate chemical engineering 2003

8/20/2019 GATE Chemical Engineering 2003

1/12

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IGATE - 2(l()l

I of 11

I

CHEMIC L ENGINEERING

·:::=::=====

I.

3

4.

5

6,

ONE M ARKS QUESTIONS 1·30)

A box

contains

6

red

balls

a

nd

4 green

bulls..


2/12

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m r a c e

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n..

parabolic

b, Ont

c. Jllll

ntor Ute

w•U

•nd

~ b o

It

o:

i.u

Ut >

m

lc

ldlc

d.

pamboli

c n l l l r the w:tll 11t1d I L ~ t in lh"

m i d d l

12. Rnorgy r"''"ircrnonl

(

per unit mn

.s

of

material

r u s h

d

o u n d

is

hi

g

be

st for

• · Jaw

o:r

usb

er

h. I{Qd 111

ill

c. Roll mill

tl. Flu[d anc:rgy mill

B .

l'hn:c •o

lid objcell. of ilic s:uuu motoriH1

;md of

aquol

ma

ss

- a spheru, •

t:y

llnder

(h:ng

tlt

=

diamot·er)

and a cube - 31\1 at

500"l inili•lty, Theso ttrc dropped in •

quenching bath co

nt:Unln

g n l•rgc vol

um

e

of

co

oHn

g.

oil

each

atlninins

tho

both

temp

erature

e\-e

ntuolty. 11te time ""' "1r•ed

for 90°o chang" or

lctuper.llUI"d

ls "

maJJ

""l

for

11.

cube

b.

cylinde•

u_ spb.:1

. ,

d. equal rora

lith

e three

14.

A

tlilute

aqu eo

u$

o t u t i o n

is

to

be

cou< enlt3tetl in an


3/12

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m r a c e

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22.

23

2-1

d. A - A

M

B >

B

Mu

tch the measu red process varia

bl

es lvi

lh

tlte

f m e u s u n J J g devices given

belmv

Losl i .(Mousoued

process nrinl. lcs)

A,

Tem peru ur-.,

l

Pressure

C }low

D.

l . o q u i ~ level

E

Composition

U(Measuringdevices)

L

Bourdo

n tlobe cl

ement

2.

c e .

plulos

3

lnfrore;J O f l 1 1 7

~ : r

l)ispla


4/12

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29

30

The

c a r : l l

l i ~ OOJl\

'crter for con\·ersion

of

so

l to

so

) by contncl process should h0\ 0

feed

with

S01

content

between

II. 5%

b.

c. 2

LS%

tL ltJ -

25

The


5/12

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m r a c e

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[ L u )

c.

.,.- )

(1

e- .,-•

J . - e

38. 6 g of cJiruon is bwtll willt ou :uuouuLof

oio

·

co

nloining

1S

ol ~ • 1.01

325 blr

IOO"C

Outo

_41bar,

.51 0"C

l.l.nlb•I

PY

kJ

Entr

py. 7

0785

1I.J kg'

1

K'

1

41 ba r,

: 5

1

8•C

Hnt WP)

· oJ salur•lcd st

t"'-"'

2799.911.J kg'

1

El11rofo\

' •lf


6/12

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m r a c e

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11nthnl

py n(

·••turatcd

\ '3p


7/12

w w

w . e x a

m r a c e

. c o m

l . Convective b e o ~

t r ~ J I I i f e r

I

c o n d u c ~ .

l v e

heat

tr.msfer

3.

vmvlt

:lli

Omil force I

vi:ICCJU force

4

lneni•l

< J ~ e

I

oree

5 lnottiaf f o t - e ~ j l r o i t u l i o n ~ l f Q ~

Codes

A

B

c

D

n. l 2 5 3

b.

s 4 3 2

c.

s 2

d.

3 4 5

Q . 5 54

are

based

on

the data

supplied In the paragraoh below

A bed of

•pherlcal p o t t i c l e ~ g

rnv

ity

2.5)

of

uniform size

I

500

j tm

is

0.5

m in

diameter and 0.5

m high.

lu th

e pocled bed$Utlt:, lito polO$ it)

mo}

he '''ken 0.4. Bf8

un

5 .-quat on for tiH: ~ b q v e

p:trti.::

le-11Utd

systl:tn tin S l uni iJ) is [ iv

en

helow

L- ll: ' •l f) l: . , -

10

.94 lO'r

,..·

(SIUnitsl

5.1. I( water L' IQ

he<

usod :tll the f1uhlhin

medi

um. Ute

minimum Ouidiz:uioh

wlocity, V

is

0 . 12 nlnll

.9

b. 1.6 tnlltl

.:;.

24mnu

d.

28

mmts

54. In :lctuol

t'Jil


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9

A

fll•id

is n

owing

ins

id

e

th

e inner 11

1he

of

A

double

pipe

heot

eo<

ph

aiic

ond

litjuid

ph:ose ()

4 an


9/12

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m r a c e

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•

T

Lluc jouuug (fll. Tl) and {H2. T2 ) IS tl•e

C

ll

.lStlltlt eothulp} line. Chose

Ihe

corr

eel

'ue from lmong the uhornat ives A. B. C

t ~ ~ ~ d O

u.

T1

Dew Poi01

Temp,;T2 Dry

Bu

lb

Temp.; T3 Wut Bull Tt:mp.

b.

T1 De

Point

Temp.:

T2

Wet Bulb

Tem

p.

:

T3 ~

13ulbT

cmr

.

T l

Wei

l l t ~ h

Te

mp

.:

T2

Dr)

13

ulb

Te

mp

.: T Dew P()int Temp.

d.

Ti -

D.y Bulb Temp

.:

T2 -

Bulb

Te

mp.; T3 Dew

l'

n

in

·tTemp.

68. Com[ ()

und

A is cxtrnctcd from a

of A • ll inlo o pure so lvent S. A co

curreul (tnh is used lin the liq,,id-liqn id

c ; q r a o rL: inl

et

mt c o lhc solut ion

oonl;umng

A

IS 200 moles o( Uihr m) uod

I

he solvenl

llow

ra

te

1s

400 moles 'f S

hr

m

1

• ·n,.,

eqmlibnun• data

IS n:prescnted by

Y = 3 X:

II he

re

Y iS Ul mo les of Alllto

le

s

uf

l3

and X

.tS

in mole

s

of

Al

mole

s

of

S.

Tbe maximum

percen

t11£e extraction

oc

bi

ov

cdin

fb i un

it

II,. 25'' '

b. 50'l•

u.

d.

IJO•o

>

9. A

CS

TR

is

h> b. de.

si

gu

eu il

1 uti

e

xo lh

cmlic liquid

pha

se lirsl order

reac

tion

of 1hc type A . R is pl

uC\)

. Tl1e

r

cac

iM is

to

be

p

roYidcd

with n jodccl

in

coola is 0(lwlog. l'n

ll

cm ing dulo

JS gL \

lU

c,..

,

= 5

krnol

lm X" = 0.5;

feed

lcmpemwn: - reru:tor

Lvorull rea

ct

or

volume, if

"

convcrsign oi' 0 9 i•

de

si

re

d'/

i

.

u, CSl

'R

fo

liO\ ed

by

t1 PFR

b.

PFR

fnJinwe tl by

u

CSTR

c.

CSTR fo

llowed

by

u

PFR lullowed

bv

CSTR .

J . PFR followed hy u CSTR i'FR

,

a.

7

- 72

. . .

II•H4 o• the 4•ta

ev JIIIIed

n

the Jll•n•ra•ll below

l')lc

following phn$e

are

curried t Ut

n u in

a CSTR

, j

. .

2R r

•

k;J

k •

20mo l (

sec

m

1

bur

.1-> .JS ~ k p ~ 4 0 m m h a r )

toUll m e - I bar. F

M -

1 mill/sec; feed is

pu

re A

71. Wh

ul tlte DldX

im um

pOs>ble \'ulue oi

l'

FR (mol sec j?

a.

lf3

b. 1 2

"· 3

d. 2

72

. Tbe YO lttme o

J.

.a CSTR

r ~ q u

r e d lor a

frnct•onol co nversion of1\ cq

uul lo

0.3 d

ue

W he

ot11L

teU

CIIOII IS

o

(),() I I


10/12

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73,

74

75

b. 0.:: 1

c 0 175

d. 0.37.5

A step input tracer test IS used to e:.']liore

lhe llow pullem

of llmd

lhrough a \l:SSel

of

o tul

vo

lume eqtmlto I m

1

havUlg a feed

ro

tc

of

1m

1

/m1n

lclen

ll

f} l\Jr

C l l ~ h

UurW In Gr011p I

d

su

itnbl

e

flow

modd rrom list

given

unde

r

Grou p 2

Omup I

A Curvel

B.

Curvd

Oroup1

I

J'fR

and C >'TR m

sencs

' ( ~ I R wllb dead

p : l ~

J f'FR

m

st.'ri.:S wtth

n

CSTR and dead

spuc:e

1. CSTR

a A-4. B-3

b. A-I. B-1

c

A-l

B-3

d..

A-2

. B·I

f

ollcl\"'' 1 tsothennul L-inette

t i ~ U l

tW

ob tained

in

a

basket type of mixed Jlo•1

reac tor for n

porous

catalyst, Determ ine

the role or pore

d i J J u ~ o n

and 1 '1emal

mass U'llllSfer processes

- I l l ......,._ ~ , : >

I

•

.,

.._

-

2

I

l

a St

rong

po

re

diiTuston

con

lfol

and

m ~ s s

t m n s ~ e r no l controlling

b. Both pore

dJJfus

t

on an

d mass transler

not

con t

ro

ll ing

c Both pore ditfusfon and mass tr:tnsfer

controlling

d. Mnss

tmosfer controlling

The pressure diflerentinl o.cmss a verncnl

"Cntunmeter

tshown

tn F gurej •s

measured

" 1lh the

help

or

a mercury

maoomeler to

c:sttm

ale llow rate of' water

76

77

Ill o l

flowu'll lhruugh l

The

exp

ressiOn for

the

veloeny

ofwa

ter

nt

the throat Is

t

t

t

••

Wutc

" t:nlcrttlJ o stor:lgc

h l t 1

Ill u

tumpcn

•

turc T,.

und

llow ~ t c

Q,

1

and

l ~ a v l 1 1 g ut

n

ll(IW

rnle Q und

t t n n p e r n

T

There we negligibl" hent

J o s ~ s In

the

ta

nk Th

e-

nreo of"ross i n n

of

the lllnl.

is ~ The mod.:l thot d c s c n b c ~ the

d ~ m m

vanatmn

or

warer

lelllperm:we

m

the

tlllllwi

iJ tune l< giveoss

o To

+

T

'

a.

(

r,-F)= A

•

-

'

b

Ql;,- o r

lh

- '

tl

c.

c; (l

;

-

T = 1l h

d. V(T. - J

)=

ti(Th)

- II .. r dt

F

11d the

u

l t tm

iiU g

un and

frequency

fo

r u

pruponlottal

e>ontroiiL-r in

the c-il5C of u

process

hnving

the o l l t l 1 1 i n ~ unnsfcr

f ~ n c ; ion

C' ( ·)

I

• ,I

(-lA ) ( 2 •

I ) ~ H)


11/12

w w

w . e x a

m r a c e

. c o m

I ,. 45

"'=-:]j;:n. iJi4

b. =

fi

:K ~ IG

IJ G • 3

c. ~ l;K

d.

w :

Ji:

K

78.

Mnt

ch the

aype or

.:ontroller given in

Group l

that

m ~ l i t a b l ~

f ~ ~ r

each

application givenin Group

l

7".

Group l

A Distilli1Lioo colurnu b o L L O U I ~ lo be

controlled with boUoru.s flow

B. Distillati

bn

column pn:ssurc ltJ be

co

ntrolled by

man

lp

ullltin

g vapor flo"

from

the

ttJP plate

(

Flow

co

ntr

ol

of

11

liqu

id

ITqm

•

p

um

p

hy

posiliomng Ute ' 'alve in the line

0. Control

of

emperature C:) 1 R witlt

ctXllnnl flow in jackot

Group 2

I.

P control

l . P-1 control

3, P-l-D

conlrl' l

Codes

A n

l l

1

1

b. 2 2

e. 2

1

tl ,

2

3

c

2

3

I

2

0

3

3

3

fn

the ca•e ,)r

f ~ d

t'OrWar


12/12

w w

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84.

85

.

86.

1L 660 iakl

u.

Discounted

volud

of U1c depfeciation

btnetitr,wer

tax

life in ntpecs

p,

l•khs

b, 24 l h t b ~ • ' 'it:Bin n•phthn

l : l t o

~ ~ i n ~ p h l l m

c.

virgin napltlb;J -

l l t l l l

nupltthn

toking na

ph h.1

d.

virgin

.nnpht:hn - cOkilljl nuphOm

e 3 t a t H t p

gate chemical engineering 2003

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