Question # 1

How does viscosity affect relative motion between the liquid layers.

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Does not affect

Accelerates

May accelerate of retard

Retards

Rate of flow of a liquid is expressed in

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Litre m-3

Litre s-1

Litre m-1

Litre s

A rectangular block has length 6 cm, width 5 cm and height 10 cm Its mass is 150 g The density of the block is

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0.2 g cm-3

0.5 g cm-3

2 g cm-3

5 g cm-3

Artificial polymers are made by a chemicals reaction known as.

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Crystallization

Electroplating

Polymerization

Polarization

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 pulsating outflow of blood from the heart by alternate systole and diastole is smoothed out by

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The blocking action of the heart's valves

The viscosity of the blood

The effect of gravity

the elasticity of the blood vessels

Which of the following is mechanical property of a material.

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Strength

Stiffness

Ductility

All of these

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

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Lift

drag

Thrust

Turbulence

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

What is generated when air moves an air foil.

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Thrust

Lift

Drag

Turbulence

Blood pressure of a person

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Increases with age

Describe with age

Have no change

Stops with age

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.

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1,000 Pa

4,000 Pa

3,000 Pa

6,000 Pa

Crystalline solids are of.

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Short range order

Long range order

Intermediate range

Plastics

Density of blood a

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Equal to water

Greater than water

Less than water

zero

The property of a material to return to it original shape and size on the removal of an external force is called.

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Stress

Strain

Toughness

Elasticity

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

For which position, will the maximum blood pressure in the body have the smallest value.

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Standing up right

Sitting relaed

Lying horizontally

Standing on one's head

Which type of solid have definite melting point.

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Crystalline solids

Amorphous solids

Glassy solids

Polycrystalline solids

The air pressure at the bottom of an air foiling motion is

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Greater than that on the top

Equal to that on the top

Grather than that on the top

Zero

The ratio of stress to strain is called.

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Bulk modulus

Young's modulus

Modulus of elasticity

Shear modulus

A solid in which there is no regular arrangement of molecules.

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Amorphous solids

Glassy solids

Crystalline solids

Polymerization

With increase in temperature the angle of contact of liquid.

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Increases

Decreases

Becomes zero

First increase then decreases

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

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

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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PPSC Physics Chapter 2 Structural Properties of Matter MCQs With Answers

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