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 'Overseer (civil) ; Overseer Gr II/Draftsman Gr.II; Draftsman Gr I/ Overseer Gr I (civil) - LSGD ; KLDB; KLDC; PWD/Irigation (CAT.NO:127/20; 213/20; 347/20)' And exam conducted in the year 21. And Question paper code was '101/21'. 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.
34.
35.
36.
37.
38.
39.
40.
41.
A canal aligned nearly parallel to the contours of a country is known as
A) side slope canal B) watershed canal
C) contour canal D) ridge canal
A solid construction put across the river to raise its water level and divert into the
canal is known as
A) marginal bund B) weir
C) dam D) barrage
Permanent hardness of water can be removed by
A) adding alum B) adding lime
C) boiling D) zeolite process
The maximum permissible chloride content in treated water of public water supplies
should not exceed
A) 5 ppm B) 100 ppm
C) 250 ppm D) 150 ppm
In rapid sand filter air binding is caused due to excessive
A) negative pressure B) pressure
C) water pressure D) turbidity
The gas which may cause explosion in sewers is,
A) carbon dioxide B) methane
C) ammonia D) carbon monoxide
Removal of oil and grease from sewage is known as
A) screening B) skimming
C) filteration D) oxidation
Surge tanks are used to
A) for storage of water
B) to increase the velocity in a pipe line
C) as overflow valves
)
D) to guard against water hammer