Kerala PSC Previous Years Question Paper & Answer

Title : junior Lab Assistant
Question Code : A

Page:9


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'junior Lab Assistant' And exam conducted in the year 2023. And Question paper code was '006/2023'. 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.

page: 9 out of 16
Excerpt of Question Code: 006/2023

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06/23

Routinely used cytological fixative is

A) Carbowax

B) Carnoy’s fixative

C) 10% formalin
)

D) 95% ethanol-ether mixture

If the percentage error in radius is 1% and the percentage error in length is 3%, what
is the percentage error in calculating the volume of a cylinder ?

A) 4% B) 2% C) 3% D) 5%

A particle moves with velocity 3 m/s towards East for a time t and with a velocity
2 m/s for a time 2t along North. Find the average velocity.

A) त 8) 5/6 0) 5/6 0) 5೧/6

Find the torque of a force 2+ 2 + 5k about the origin. The force acts on the particle
whose position vector is i— j+ 2k.

A) -9i-j+4k B) 4i+j-3k

©) अ+†- 4 ‏(م‎ 21+ 4[ + 56

A body weighs 50 N on the surface of the earth. What is the gravitational force on it
due to the earth at a height equal to half the radius of the earth ?

A) 25N B) 50N C) 10N D) 0

Which of the following is correct for an adiabatic process ?
(i) No heat exchange between system and surrounding.
(ii) No temperature change.

(iv) Fast process.

)
)

(iii) Slow process.
)

A) (i) and (iv) B) (i) and (iii) C) (ii) and (iii) D) (i)

At what distance from the mean position, is the kinetic energy in a simple harmonic
oscillator equal to potential energy ?

A) + B) 8 ௦) 0) ௨

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