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 'Finger Print Searcher -Police Department(CAT.NO:139/2020)' And exam conducted in the year 2021. And Question paper code was '103/2021'. 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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103/21
Which among the following is a Three-level Laser ?
A) He-Ne laser B) Semiconductor laser
C) Ruby laser D) Nd: YAG laser
Identify the multivibrator which generates square waves of its own.
A) Bistable B) Astable
C) Monostable D) ON stable
In an adiabatic expansion, let ہنا and ونا be the internal energies of the initial and
final state. Which is the correct expression ?
=U, ہلا )8 ولا > ہلا (ھ
D) None of the above ولا > ہلا C)
What is the change in entropy when 341.25 grams of ice at 0°C is converted into
water at the same temperature ? Latent heat of ice = 80 cal/g.
A) 100 cal/g B) 0.01 cal/g
©) 27300 cal/g 0) 4.266 cal/g
What is the average Fermi energy at 0 K ?
A) 3/5 عع 1/2 )8 عع
C) 5/3 عع 2/3 )0 عع
What is VANTA BLACK ?
A) Vertically aligned nanotube arrays
B) Vertical arrays of nanotube alignment
C) Vertically aligned nanotype arrays
D) Virtually aligned nanotube arrays
What happens to the Gibb’s function in a first order phase change ?
A) Decreases B) Increases
C) Infinite D) Constant