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PPSC Physics Chapter 2 Structural Properties of Matter MCQs With Answers
Question # 1
If a fluid does not wet a liquid surface, the angle of contact is.
Choose an answer
90
o
less than 90
o
* greater than 180
o
between 90
o
and 180
o
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Question # 2
The lowest stress at which strain increases in stress in called.
Choose an answer
elastic limit
Plastic limit
Yield point
Bulk strength
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Question # 3
a body floats in liquid contained in a beaker The whole system falls freely under gravity The outthrust on the body due to liquids is
Choose an answer
Zero
Equal to the weight of the body in air
Equal to the weight of the liquid displaced
Equal to the weight of the immersed portion of the body
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Question # 4
Viscosity in fluid refers to
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The density of a fluid
the compressibility of a fluid
Tangential force exerted on solid surface by the flowing fluid
Normal forces exerted on solid surace by the following fluid
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Question # 5
In which one of the following states molecules do net leavt their position.
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Solid
Liquid
Gas
Plasma
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Question # 6
What is generated when air moves an air foil.
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Thrust
Lift
Drag
Turbulence
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Question # 7
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 # 8
The word amorphous means
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With regular structure
Without structure
May have regular structure
Thermoplastics
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Question # 9
Which liquid can flow easily.
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Traacle
Pitch
Ether
All flow with same rate
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Question # 10
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.
Choose an answer
0.2 g cm-3
0.5 g cm-2
2 g cm-3
5 g cm-3
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Question # 11
A uniform vertical wire is stretched by hanging a mass from its lower end Which of the following does ot effect the strain in the wire.
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The stress
The upstretched length
The load applied
the Young's modulus of the metal
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Question # 12
The SI unit of modulus of elasticity us
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N m-2
N m-1
N m
N m -3
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Question # 13
Venturimeter is a device used to measure
Choose an answer
Density of a fluid
Speed of a fluid
Pressure of a fluid
Viscosity of a fluid
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Question # 14
Which of the following solids exhibits only short range order.
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Amorphous solids
Polymeric solids
Crystalline solids
All of the above
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Question # 15
A fluid is said to be ideal if it is
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Non viscous
Non viscous and incompressible
Non viscous and with steady flow
Non viscous incompressible and has steady flow
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Question # 16
The product of velocity and cross sectional are for a liquid flowing through a pipe is a measure of the.
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Rate of flow
Volume of fluid
Fluid pressure
Fluid friction
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Question # 17
The dimensions of viscosity are
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[MLT-1]
[MT-2]
[ML-1T-1]
[ML2T-1]
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Question # 18
A tank 3 m long 1 m wide and 0.5 m deep is filled with oil which weight 12,000 N . The pressure on the base of the tank due to oil is.
Choose an answer
1,000 Pa
4,000 Pa
3,000 Pa
6,000 Pa
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Question # 19
Which of the following is more viscous
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Air
Honey
Water
Milk
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Question # 20
A structure that is intermediate between order and disorder is.
Choose an answer
glassy solids
Polymeric solids
Amorphous solids
Crystalline solids
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Question # 21
The extension produced in a sample of material depends upon
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Nature of the material
Stretching force
Cross range order
All of the above
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