## Kerala PSC Previous Years Question Paper & Answer

Title : Head Master (High School)/ Assistant Educational Officer (SR for ST Only) - General Education
Question Code : A

Page:3

Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name ' Head Master (High School)/ Assistant Educational Officer (SR for ST Only) - General Education ' And exam conducted in the year 2022. And Question paper code was '83/2022/OL'. 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.

page: 3 out of 14
Excerpt of Question Code: 83/2022/OL

i) Stress = 107
ii) Strain = 0.5 x 10°

i) Youngs Modulus = 2 ५10" Nim?

A:Only iand ii
B:-Only ॥ and iii
C-Only 876 iii
D-All of the above (i, ॥ and ii)
Question15:-100 calories of heat is added to 10 grams of water, find the rise in the temperature of water. Given specific heat of water = 1 ‏ع "نولاق‎
i) Given data is insufficient
1) 30°C
1) 10°C
A:Only i
B-Only ii
‏الا رادم‎
D:-None of the above
‘Question16:-There is a change in temperature accompanying expansion of a gas without production of work or transfer of heat. Which of the following propositions related to the given
Statement is true 7
i) This is called Joule-Thomson effect.
li) This process is used in liquefying gases.
iii) Hydrogen and helium will obey this at room temperature
A:Only iand ii
B:-Only ॥ and iii
C-Only 876 iii
D-All of the above (i, ॥ and ii)
‘Question17::Which of the following propositions related to the Doppler Effect is true 7
1) as one approaches a blowing horn, the perceived pitch is higher until the hom is reached.
ii) light from a distant star, observed from the Earth, shifts toward the red end of the spectrum if the Earth and star are receding from each other.
iii) Doppler effect will only take place when the velocity of the source wave is less than the velocity of the wave.
A:Only iand ii
B:-Only ॥ and iii
C-Only 876 iii
D-All of the above (i, ॥ and ii)
व simple harmonic motion is represented by x = 10sin (20t + 0.5). Which among the following propositions are true ? (displacement is measured in metres and time in
second).
i) amplitude = 10 ए)

ii) angular frequency
li) frequency = 10/2 7.

A:Only i
B-Only ii
C-Only 876 iii
D-All of the above (i, ॥ and ii)
Question19:-Which of the following statements are true about viscosity 7
i) It is the opposing force between moving fluid layers.
ii) Viscosity of liquids increase as temperature increases.
il) Viscosity of gases increase as temperature increases.
A:Only iand ii
B:-Only ॥ and iii
C-Only 876 iii
D-All of the above (i, ॥ and ii)
‘Question20::What is true about a reflecting telescope 7
i) ॥ can examine visible light only.
ii) thas lesser aberrations than refracting telescope.

i) has only a single mirror.

A:Only i