Question # 1

Any substance that can flow is a

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Solid

Gas only

liquid only

Fluid

At which temperature surface tension of liquid will be maximum

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0 ^oC

20 ^oC

30 ^oC

100 ^oC

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

Viscosity of fluids with rise in temperature.

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Increases

Decreases

Remains constant

Vanishes

Which of the following is more viscous

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Air

Honey

Water

Milk

Reversible alternation of the form of dimensions of a solid body under stress and strain is called.

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elastic limit

Plastic limit

elestic deformation

Plastic deformation

A liquid surface tend to contract this phenomenon is due to

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Viscosity

Diffusion

Density

surface tension

The force that moves a rocket or a plane forward is called.

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Lift

drag

Thrust

Turbulence

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

The surface of a liquid is somewhat similar to a stretched membrane because.

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There is an elastic stress in the surface

Tension in the surface increases if the area is increased

The surface has a natural tendency to contract

Ripples can be produced on the surface

Highly conducting state of matter is

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Conductors

Plasma

Semiconductors

Insulators

Molecules of a liquid

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Do not vibrate about their mean position

Are rigidly held with each other

Have weak attractive forces

Have strong attractive forces

Birds planes and boats are streamlined to reduce

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Turbulence

Thrust

Drag

Lift

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

If a liquid does not wet a solid surface, the angle of contact is.

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Less than 90^o

Greeter than 180 ^o

90 ^o

Between 90 ^o and 180^o

The SI unit of modulus of elasticity us

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N m-2

N m-1

N m

N m -3

Which of the following solids exhibits only short range order.

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Amorphous solids

Polymeric solids

Crystalline solids

All of the above

A solid object is

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Not elastic below the elastic limit

Not elastic above the elastic lime

Elastic below the elastic limit

Not elastic at all

The fluid which is incompressible and non viscous is called.

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Viscous fluid

Nonideal fluid

Ideal fluid

Perfect fluid

Blood pressure of a person

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Increases with age

Describe with age

Have no change

Stops with age

Artificial polymers are made by a chemicals reaction known as.

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Crystallization

Electroplating

Polymerization

Polarization

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PPSC Physics Chapter 2 Structural Properties of Matter MCQs With Answers

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