Kerala PSC Previous Years Question Paper & Answer
Page:7
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Junior Instructor ( Plumber)' And exam conducted in the year 2023. And Question paper code was '021/2023'. 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.
32.
33.
34.
35.
36.
37.
38.
39.
021/23
Which is the process of water softening treatment works based on ion-exchange-
process ?
A) Zeolite process B) Reverse osmosis process
C) Lime soda process D) De-mineralization process
Which material is used to make ferrules in dual system of treated water supply ?
A) Lead B) Brass
C) Steel D) Bronze
Nephelometer is used for determining
A) Temperature B) Turbidity
C) Colour D) Acidity
Tri-calcium phosphate and carbon is used for removing
A) Calcium B) Magnesium
C) Fluoride D) Carbon
The value of B-coli index for drinking water should not be more than
A) 10 B) 20 C) 40 D) 30
Which plaster thickness of not more than 25 mm finished surface resemble very
much as marble finish ?
A) Lime mortar plaster B) Rough coat plaster
C) Stucco plaster D) Pebble dash plaster
Which is the grade of ordinary portland cement conforming IS 12269 ?
A) 53 grade B) 43 grade
C) 33 grade D) 63 grade
Which one is artificial sand ?
A) Sea sand B) Crushing stone sand
C) River sand D) Pit sand