Question # 1

Amorphous solids are also more like

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crystalline solids

gases

liquids

any one of them

When a stress changes the shape, it is called the

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compressional stress

tensile stress

shear stress

any one of them

The transition from solid state to liquid state is:

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Abrupt

Slow

Continous

Discontinous

Both (A) and (D)

The critical temperature of aluminium is

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1.18 K

4.2 K

3.72 K

7.2 K

The bonding between the semi-conductor materials is

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covalent

ionic

either of them

none of them

When a silicon crystal is doped with a pentavalent element, then the atom of the pentavalent element is known as

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acceptor

donor

either of them

none of them

The pattern of crystalline solid is:

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One dimesional

Two dimensional

Three dimensional

Either (A) or (B)

None of these

The critical temperature of mercury is

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1.18 K

4.2 K

3.72 K

7.2 K

The doped semi-conductor materials are known as

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intrinsic semi-conductor

extrinsic semi-conductor

either of them

none of them

Examples of polymeric substances are:

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Plastic

Synthetic rubbers

Zirconia

All of these

Both (A) and (B)

The magnetism produced by electrons within an atom can arise from

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electrons orbiting the nucleus

electrons posses a spin

both motions

none of these motions

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

The size of the domain is such that they can contain

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10²to 10⁴atoms

10⁴ to 10⁸atoms

10⁸to 10¹²atoms

10¹²to 10¹⁶atoms

An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:

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800^oC

500^oC

300^oC

100^oC

None of these

The materials in which there are plenty of free electrons for electrical conduction are known as

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conductors

insulators

semi-conductors

all of them

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

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Nuclear force

Cohesive force

Adhesive force

Coulomb force

None of these

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

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