Kerala PSC Previous Years Question Paper & Answer
Page:4
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'LABORATORY ASSISTANT NCA PH KERALA HIGHER SECONDARY EDUCATION' And exam conducted in the year 2015. And Question paper code was '012/2015'. 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.
24.
26.
28.
29.
30,
31.
12015
What is the frequency of A.C. used in India?
(4) 60 7
(€) 50 Hz
The sky appear blue due to :
(A} Refraction
(C) Secattering
What is the prineiple of transformer?
(A) Mutual induction
(C) Ohms law
Name the device used to convert A.C to D,C:
(4) Capacitor
(8 Solar cell
Sound cannot travel through -
(മ) Steel
(0) Vacuum
Name the source of energy in stars :
(A) Fusion
(© Burning of coal
What is the speed of light in vacuum?
(A) 340 7/8
(0) 3 > 105 ४/8
18 100 1४
(D) 401%
(B} Reflection
(D) Dispersion
(ए) Self induction
(D) Magnetic effect of current
(B) Transistor
(D) Diode
(B) Diamond
യ) له
(B) Fission
(D) None of the above
18) 3000 1/8
(D) 3 100 पाह
How many molecules are present in one mole of water?
(A) 6.022x107
(¢) 6.022x10%
രു 609910“
0( 7
