ECAT Pre General Science Physics Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 17 Physics of Solids

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 17 Physics of Solids

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ECAT Pre General Science Physics Chapter 17 Physics of Solids

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Question # 1

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

Question # 2

The smallest three dimensional basic structure is called as:

Question # 3

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

Question # 4

The first super conductor was discovered in

Question # 5

The charged nucleus of an atom itself spins its magnetic field

Question # 6

Tick the one which is not polymer solid:

Question # 7

The transition from solid to liquid is actually from:

Question # 8

There is a regular arrangement of molecules in a

Question # 9

The curie temperature of iron is about

Question # 10

The substances which break just after the elastic limit is reached, are known as

Question # 11

The units of modulus of elasticity are

Question # 12

The smallest three dimensional basic structure in a crystalline solid is called

Question # 13

When a stress changes the shape, it is called the

Question # 14

Polymeric solids have

Question # 15

The critical temperature of mercury is

Question # 16

The ability of the body to return to its original shape is called

Question # 17

Each atom in a metal crystal vibrates about a fixed point with an amplitude that:

Question # 18

Whenever a covalent bond is broken in an intrinsic semi-conductor

Question # 19

The size of the domain is such that they can contain

Question # 20

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

Question # 21

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

Question # 22

Examples of polymeric substances are:

Question # 23

The word amorphous means:

Question # 24

Electrons of an isolated atom are bound to the nucleus, and

Question # 25

Examples of crystalline solids are:

Question # 26

Glass and high carbon steel are the examples of

Question # 27

Amorphous solids are also more like

Question # 28

The conduction band in a solid

Question # 29

Synthetic materials fall into the category of

Question # 30

The results of mechanical tests are usually expressed in terms of

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 Recently a complex crystalline structure known as Yetrium Barium Copper Oxide have been reported to become superconductor at
A. 125 K
B. 25 K
C. 263 K
D. 163 K
2 The neighbours of every molecule in crystalline solids are arranged in
A. an irregular manner
B. a regular manner
C. any manner
D. none of them
3 In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric strain is called
A. Young's modulus
B. Bulk modulus
C. Shear modulus
D. all of them
4 The magnetism produced by electrons within an atom can arise from
A. electrons orbiting the nucleus
B. electrons posses a spin
C. both motions
D. none of these motions
5 Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called
A. tiny regions
B. domains
C. vectors
D. none of them
6 Under the elastic region, the deformation produced in the material, the deformation produced in the material will be
A. permanent
B. temporary
C. either of them
D. none of them
7 The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:
A. Critical temparature
B. Temperature of vaporization
C. Melting point
D. Both (A) and (C)
8 The vast majority of solids are in the form of
A. amorphous structure
B. polymeric structure
C. crystalline structure
D. all of them
9 The domains are of macroscopic size of the order of
A. centimeters
B. meters
C. millimeters
D. nanomneters
10 Lead, copper and wrought iron are examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances

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