Kerala PSC Previous Years Question Paper & Answer

Title : ASSISTANT ENGINEER SR FOR PH KERALA WATER AUTHORITY
Question Code : A

Page:9


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'ASSISTANT ENGINEER SR FOR PH KERALA WATER AUTHORITY' And exam conducted in the year 2016. And Question paper code was '083/2016/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.

page: 9 out of 13
Excerpt of Question Code: 083/2016/OL

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stretcher course

header course next to first brick

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Correct Answer:- Option-C

Question76:-Half life for a general *n~(th)" order reaction is
&:- ` (0.5 (7-1)-1)/{1८(-1}` ` ¢ (40)^{(1-7}`
B:-*(0.5~(1-n)-1)/(k(n-1)}* “C_{AOY(1-n)
யய 6௧0
0:- )0.5 )1-0(-1(/)6)0-1((: 6 ௧௦50-1
Correct Answer:- Option-B

Question77:-After 8 minutes in a batch reactor, *C_{AO) = 1mol/1* and conversion 15 80%. After 18 minutes, the conversion

is 90%. Then the rate equation is

0.5 6 காடு

25` `€ (^`

` (4) = 0.25 6 லாடு

` न (६) = 0.5 `¢ (&)^

Correct Answer:- Option-A

Question78:-Holding time प) and space time 0 for flow reactors are related by

കട

ട്‌ (க்கு
D:- 1 = 3

Correct Answer:- Option-A

~>
۸ ഷ്ട R is camied out in an ideal plug flow reactor. The design equation

Question79:-A first order reversible reaction
is given by: 45 180)/( (60)

கடய ട (0 മട) + X_(A)" "[-(1 +epsi_(A) X_(Ae) हा (1-9 (009 (828) - छा (802 (801
(വല്‌ ട 105)" 1-1 +epsi_(A) X_(A)) In (1-(X_(A)}/X_(Ae)) - epsi_(AIX_(A))
(1) "tau” =" (M + ‏ازعم أن‎ *[-(1 +epsi_(A) X_(Ae)) (1-0) 5) - epsi_(AIX_(A)T

ए0:- ട്‌ + त (लोकनि) [-1 ഇടി (1 (20) (1-0 (हल (25) -ഒട്‌ (0 ശ്‌

Correct Answer:- Optiol
Question80:-The rate 4616 ing step of Michaelis Menten kinetics is

A:-The complex formation step

B:-The complex dissociation step to produce product

C:-Both 1} and 2}

D:-None of the above

Correct Answer:- Option-B
Question81:-The thermal conductivity is maximum for

A:-Silver

B:-Chrome-nickel steel

C:-Plaster of paris

D:-Carbon steel

Correct Answer:- Option-A
Question82:-A metal wire of 0.01m diameter and thermal conductivity *200 (W)/(mK) is exposed to a fluid stream with a
convective heat transfer coefficient *1000 (W)/{(m~ (2)K™ . The Biot number is

A:-10

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