Question # 1

Which of the following is more viscous

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Air

Honey

Water

Milk

The terminal velocity in case of spherical droplet is directly proportional to.

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Square of the radius of the droplet

Radius of the droplet

Cube of the radius of the droplet

Half of the Radius of the droplet half

The proportion of crystalline to amorphous regions in a polymer depends on its

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Chemical composition

Molecular arrangement

Physical state

Chemical composition and molecular arrangement

The ratio of tensile stress to tensile strain is called.

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Shear modulus

Bulk modolus

Young's modulus

Elastic limit

The velocity at which laminar flow changes to turbulent flow is called.

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Terminal velocity

Escape velocity

Critical velocity

Uniform velocity

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

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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

Which principle is in effect when a ship displaces ocean water.

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Bernouli's

Pascal's

Hook's

Archimedes

Minor losses through values, fittings, bends etc are modeled as proportional to

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Velocity head

Static head

total head

Pressure drop

Plasma exists in

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Electric bulbs

Tube light

Energy savers

Fluorescent tubes

Which type of solid have definite melting point.

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Crystalline solids

Amorphous solids

Glassy solids

Polycrystalline solids

Which liquid can flow easily.

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Traacle

Pitch

Ether

All flow with same rate

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

Crystalline solids are of.

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Short range order

Long range order

Intermediate range

Plastics

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

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

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Lift

drag

Thrust

Turbulence

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

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

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

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90^o

less than 90 ^o

* greater than 180 ^o

between 90^o and 180 ^o

Highly conducting state of matter is

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Conductors

Plasma

Semiconductors

Insulators

Artificial polymers are made by a chemicals reaction known as.

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Crystallization

Electroplating

Polymerization

Polarization

The venturimeter is an instrument used for measuring the

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Viscosity of a liquid

Flow speed of a liquid

Compressibility of a fluid

Specific gravity of a liquid

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PPSC Physics Chapter 2 Structural Properties of Matter MCQs With Answers

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