Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Junior Instructor (Welder) - Industrial Training ' And exam conducted in the year 2021. And Question paper code was '070/2021'. 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.
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What is the post-heating temperature for welding medium carbon steel plate ?
A) 90°C to 100°C B) 300°C to 600°C
C) 100°C to 300°C D) 600°C to 900°C
The percentage of carbon in acetylene gas is
A) 80.3% B) 85.2% C) 89.5% D) 92.3%
Which type of valve is used in flashback arrestor ?
A) Needle valve B) Globe valve
C) Non return valve D) Pressure control valve
In which temperature liquid oxygen becomes solid ?
A) - 200°C 8) - 210°C
©) - 218.4°C 0) - 225.4°C
One kilogram of liquid oxygen produces
A) 750 litre of oxygen gas B) 800 litre of oxygen gas
C) 850 litre of oxygen gas D) 900 litre of oxygen gas
What is capacity of acetylene cylinder ?
A) 3.5൬ - 8.5 m3 8) 4.5 تم 8.5 - 3م
௦) 5.3 m3 - 8.5 3 0) 7.5 ೧3 - 8.5 3
Acetylene gas leakage is identified by
070/21
A) Soapy water B) Fresh water
C) Hard water D) Normal water
For what purpose of placing of wedge or an alignment clamp between plates ahead
of the weld ?
A) Improper welding 8) In complete penetration
C) Overlapping D) Divergence allowance
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