Question # 1

The maximum stress that a material can withstand, is known as

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plastic point

elastic limit

yield point

ultimate tensile strength

The bonding between the semi-conductor materials is

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covalent

ionic

either of them

none of them

Tick the one which is not polymer solid:

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Zirconia

Polythene

Nylon

Synthetic rubber

None of these

when the deformation produced in the material become permanent, this type of behaviour is called

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proportionality

elasticity

plasticity

none of them

Above the curie temperature, iron becomes

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ferromagnetic

paramagnetic

diamagnetic

any one of them

Within each domain, the magnetic field of all the spinning electrons are

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parallel

antiparallel

perpendicular

all of them

Synthetic materials fall into the category of

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crystalline solids

amorphous

polymeric solids

all of them

The SI unit of strain is

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N

Dynes

Pascal

Dimensionless

A semi-conductor in its extremely pure form is known as

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extrinsic semi-conductor

intrinsic semi-conductor

either of them

none of them

Amorphous solids are also called as

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crystalline solids

polymeric solids

glassy solids

any one of them

The arrangement or molecules or atoms in a crystalline solid can be studied by using:

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Chemical methods

Neutrons

X-ray techniques

Copper atoms

Both (A) and (B)

Experiments revealed that the ratio of the stress to the strain is a constant value for

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different material

all materials

a given material

all of them

When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called

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p-type semi-conductor

n-type semi-conductor

either of them

none of them

In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:

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Adhesive force

Nuclear forces

Inter atomic cohesive force

Electromagnetic force

None of these

The band above the valence band is called

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high energy band

conduction band

empty band

none of them

Examples of crystalline solids are:

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Cooper

NaCl

Zirconia

Both (A) and (B)

All of these

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Physics ECAT Pre Engineering Chapter 17 Physics of Solid Online Test MCQs With Answers

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