Tamil Nadu (English Medium) Std 8 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
From the following which one is not a unit of force?

(A) Newton	(B) Dyne
(C) kg m/s²	(D) Pascal

Question-2
Who invented the Barometer?

(A) Torricelli	(B) Pascal
(C) Faraday	(D) Newton

Question-3
The pressure exerted by the liquid at its bottom depends on :

(A) Area of the column	(B) Height of the column
(C) Volume of the column	(D) All of these

Question-4
Wheels and ball bearings are used to :

(A) Decrease friction	(B) Decrease force
(C) Increase force	(D) Increase friction

Question-5
Gravitational force is :

(A) Repulsive force	(B) Attractive force
(C) both 1 and 2	(D) niether repulsive nor attractive

Question-6
Which of the following is not a non-contact force?

(A) Frictional force	(B) Gravitational force
(C) Electrostatic force	(D) Magnetic force

Question-7
The Contact force is also termed as :

(A) Magnetic force	(B) Gravitational force
(C) Muscular force	(D) Electrostatic force

Question-8
What would be the pressure exerted by a liquid column of height 15 cm on its bottom? g = 10 m/s², d = 800 kg/m³?

(A) 1000 Pa	(B) 1200 Pascal
(C) 12 pascal	(D) 10 Pa

Question-9
Pascal is the unit of :

(A) Force	(B) Area
(C) Pressure	(D) Density

Question-10
From the following which one is used to reduce friction?

(A) Water	(B) Sand
(C) Grease	(D) Gravel

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Std 8

Tamil Nadu (English Medium)

Practice in Related Chapters
Measurements
Force and Pressure
Electricity and Heat
Light and Sound