Kerala PSC Previous Years Question Paper & Answer

Title : Technician Grade-II (Boiler Operator) - Kerala Co-operative Milk Marketing Federation Ltd
Question Code : A

Page:8


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Technician Grade-II (Boiler Operator) - Kerala Co-operative Milk Marketing Federation Ltd ' And exam conducted in the year 2022. And Question paper code was '057/2022'. 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: 8 out of 16
Excerpt of Question Code: 057/2022

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Which of the following statements is/are correct regarding ‘turbidity’ in feed water?
(i) It indicates coarse particles which settle down in stationary water.

(ii) It is the suspended insoluble matter

(A) Only (i) (B) Only (ii)

(C) Both (i & ii) (D) None of these

The formation of hard surfaces which resists the heat transfer and clogs the passages
in pipes of boiler is caused by

(A) Calcium bicarbonate (B) Calcium chloride

(C) Calcium sulphate (D) All of the above

Match the various types of feed water treatment methods in Column 1 to that in
Column 2

Column 1 Column 2

(a) Mechanical treatment (i) Lime soda softening

(b) Thermal treatment (ii) Coagulation

(c) Chemical treatment (iii) Uses a series of cation and anion
exchangers

(d) Demineralisation (iv) Deaeration

(A) 8-11, b-i, പി, d-iv (B) a-i, b-ii, പി, d-iv

(©) 8-1, b-iv, പ, d-iii (0) 8-1, b-i, c-iv, d-iii

Which of the following are the favourable conditions for corrosion in boilers?
(A) Low pH, Dissolved 0, & CO, (B) High pH Dissolved O, & CO,
(C) Dissolved O, & CO, Alkali salts (D) All of the above

Which of the following statements is/are correct about hot process phosphate
softening of feed water in boilers?

(i) It is a thermal method of treatment

(ii) It uses trisodium phosphate and caustic soda

(iii) It uses lime and soda ash

(iv) It is a chemical treatment

(A) Only (i & ii) (B) Only (ii & iv)

(C) Only (i & iii) (D) Only (iii & iv)

The corrosion in boilers can be controlled by

(A) Adding alkali salts (B) Addition of ammonia
(C) Removing oxygen (D) All of the above

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