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 'Station Officer (Trainee)' And exam conducted in the year 2023. And Question paper code was '018/2023'. 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.
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018/23
Choose the correct answer with respect to the measurement of hardness of water
by complexometric titration, carried out using Eriochrome black as indicator in a
buffered solution of pH around 10.
A) Magnesium-indicator complex is more stable than magnesium-EDTA complex
B) At the end point, the colour changes from blue to red
C) Atthe end point, colour of the solution is due to the Mg-indicator complex
)
D) Magnesium-EDTA complex is more stable than the magnesium-indicator
complex
The number of radial nodes present in 4Px orbital is
A) 4 B) 3 C) 2 D) 1
Which of the following set of quantum numbers is allowed ?
^) ॥ = 3, | = 3, m, =-2
ಥ್ರ
) n=4,1=1,m,=-2
) n=4,1=3,m,=-3
) n=4,1=4,m,=-3
८
Octane number of 2, 2, 4 -trimethyl pentane is
A) 0 B) 50 C) 70 D) 100
Which statement about carbocation is not correct ?
A) Carbocation is an intermediate in Pinacol-Pinacolone rearrangement
B) Carbocation is a group of atoms that contain a carbon atom bearing only six
electrons
C) Carbocation is an intermediate in S\1 reactions
D) Order of stability of carbocations is 1° > 2° > 3°
Which polymer is used for making bullet proof vests ?
A) Poly(p-phenylene terephthalamide)
B)
C) Polymethylmethacrylate
D)
Polycaprolactam
Polycaprolactone