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PPSC Physics Chapter 2 Structural Properties of Matter MCQs With Answers
Question # 1
If each particle of the fluid passing through a point follows the same path then flow is said to be
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Regular flow
Irregualr flow
Turbulent flow
Streamline flow
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Question # 2
Bernouli's equation includes as a special case of.
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Hook's law
Torricelli's therorem
Third law of motion
Archimedes principle
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Question # 3
The force applied on unit area of a body to produce any change in shape volume or length is known as.
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Strain
Stress
Tensile strain
Tensile stress
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Question # 4
Rate of flow of a liquid is expressed in
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Litre m-3
Litre s-1
Litre m-1
Litre s
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Question # 5
When the deforming force applied on a body produces change in shape, thenit is said t be
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Tensile stress
Compression stress
Shear stress
Shear modulus
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Question # 6
Density of blood a
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Equal to water
Greater than water
Less than water
zero
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Question # 7
A cube with sides 2 cm long is made from a material of density 8 g cm -3 What is the density of the block is.
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0.2 g cm-3
0.5 g cm-2
2 g cm-3
5 g cm-3
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Question # 8
A fundamental equation in fluid dynamics that relates pressure to fluid speed and height is.
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Equation of continuity
Bernoulli's equation
Stoke's equation
Mass energy eqation.
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Question # 9
A spring obeying Hooke's law has an upstretched length 50 mm and a spring constant of 400 N m-1 What is the tension in the spriing when its overall length is 70 mm.
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8 N
28 N
160 N
400 N
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Question # 10
Which of the substances is the lightest one.
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Copper
Mercury
Aluminium
Lead
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Question # 11
At high altitudes, the blood flows out of nose and ear because.
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Blood pressure increase at high altitudes
Percentage of oxygen in the air increase
Atmospheric pressure decreases there
Density of blood decreases of high altitudes
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Question # 12
Fluid mechanics is the study of how fluid move and the other ting involved is
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Energy
Velocity
Forces
Position
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Question # 13
If you float in water with just your nose out the average density of your body must be
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Same as that of water
Greater than that of water
Less than that of water
Zero
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Question # 14
The nib of fountain pan is split of convey ink down the nib by the phenomenon of.
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Adhesion
Cohesion
Osmosis
Capillary
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Question # 15
A small and a large rain drops are falling thgouth all.
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Large drop falls faster
Both move with same velocity
Small drop falls faster
Small drop does not fall
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Question # 16
Plasma exists in
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Electric bulbs
Tube light
Energy savers
Fluorescent tubes
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Question # 17
The strength per unit volume of a solid is called.
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shear stress
Shear strain
Bulk strength
Bulk modulus
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Question # 18
When the deforming force applied on a body produces change in length then it is said to be
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Tensile stress
compression stress
Shear stress
Shear modulus
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Question # 19
Artificial polymers are made by a chemicals reaction known as.
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Crystallization
Electroplating
Polymerization
Polarization
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Question # 20
The force that moves a rocket or a plane forward is called.
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Lift
drag
Thrust
Turbulence
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Question # 21
Bernoulli's equation is Applica table to points
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In a steady flowing liquid
In a streamline
In a straight line perpendicular to steamline
In any non viscous liquid
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