## Kerala PSC Previous Years Question Paper & Answer

Title : Instructor Grade I in Chemical Engineering (Engineering Colleges) - Technical Education
Question Code : A

Page:4

Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Instructor Grade I in Chemical Engineering (Engineering Colleges) - Technical Education' And exam conducted in the year 2022. And Question paper code was '67/2022/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: 4 out of 14
Excerpt of Question Code: 67/2022/OL

B:-25%
೦30%
5:496
Correct ۸۳۰۸۷۴ ೦೧0078.
Question23:-A solution of NaOH is prepared by dissolving 40 ‏و‎ NaOH in 90 ‏و‎ water. The composition of NaOH in the solution as mole fraction and mass fraction are approximately
0.2 and 0.44
B:-0.2 and 0.69
6.0.167 and 0.44
0.167 and 0.31

Question24:-Pure carbon is completely bumt in oxygen. The flue gas analysis shows 70% C0. , 20% CO and 20960, . The percent excess oxygen used is

Question25:-A sample of gas at 27°C and 2 atm occupies a volume of SL. The volume occupied by the same gas sample at 47°C is
५०.२५
8:29
‏ا3ین‎
‎0:87
Question26:-Choose the incorrect statement.
‘Ache partial pressure of a gas in a mixture of gases is the product of total pressure and its mole fraction.
B:-According to Dalton’s law, the total pressure exerted by a gas mixture is the sum of partial pressures of individual components of the gas mixture,
C=Dalton’s law of partial pressures assumes that the individual component gases obey ideal gas law.
D:-Dalton’s law of partial pressures is applicable to a gas mixture whose individual components obey van der Waals equation.
Question27:-A sample of gas mixture has 20% 0, and 80% N, on volume basis. The weight percentage 0, of in the gas mixture is
കാ
മമമ
248
D:28.4
Question28::Which of the following is a byproduct of petroleum refining 7
‘Ac Fuel oil
B:-Lubricating oil
ceSulfur
D:Copper
Question29::Which of the following has maximum hydrogen to carbon ratio (by weight) ?
AGasoline
Bs-Naphtha
C-Diesel oil
‏امھ‎ oil