ECAT Pre Computer Science Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 17 Physics of Solids

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ECAT Physics Chapter 17 Physics of Solids

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Question # 1

The word amorphous means:

Question # 2

The transition from solid to liquid is actually from:

Question # 3

The domains are of macroscopic size of the order of

Question # 4

Arsenic, antimony and phosphorus are the elements from

Question # 5

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

Question # 6

Examples of polymeric substances are:

Question # 7

The force applied on unit area to produce any change in the shape, volume or length of a body is known as

Question # 8

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

Question # 9

The critical temperature of tin is

Question # 10

In the phenomenon of hysteresis

Question # 11

In a soft iron, domains are

Question # 12

When a stress changes length, it is called the

Question # 13

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

Question # 14

The electrons in the outermost shell of an atom are called

Question # 15

Above the curie temperature, iron becomes

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Sr.# Question Answer
1 The whole structure obtained by the repetition of unit cells is called:
A. Crystal lattice
B. Amorphous solid
C. Polymeric solid
D. Polysterne
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 when the deformation produced in the material become permanent, this type of behaviour is called
A. proportionality
B. elasticity
C. plasticity
D. none of them
4 Within each domain, the magnetic field of all the spinning electrons are
A. parallel
B. antiparallel
C. perpendicular
D. all of them
5 Glass is an example of
A. crystalline solid
B. amorphous solid
C. polymeric solid
D. none of them
6 The units of modulus of elasticity are
A. Nm-2
B. Nm
C. ms-1
D. Pascal
7 The ratio of linear stress/linear strain is called as
A. Yong's modulus
B. Bulk modulus
C. Shear modulus
D. Modulus
8 The crystalline structure of NaCI is
A. rectangular
B. hexagonal
C. tetrahedral
D. cubical
9 There are some whose resistivity becomes zero below a certain temperature, called
A. absolute zero
B. 0°C
C. critical temperature
D. lower fixed point
10 Examples of polymeric substances are:
A. Plastic
B. Synthetic rubbers
C. Zirconia
D. All of these
11 The results of mechanical tests are usually expressed in terms of
A. stress
B. strain
C. stress and strain
D. neither strees nor strain
12 The smallest three dimensional basic structure in a crystalline solid is called
A. lattice point
B. crystal lattice
C. cubic crystal
D. unit cell
13 When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called
A. p-type semi-conductor
B. n-type semi-conductor
C. either of them
D. none of them
14 The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict
A. short range order
B. long range order
C. both of them
D. none of them
15 A semi-conductor in its extremely pure form is known as
A. extrinsic semi-conductor
B. intrinsic semi-conductor
C. either of them
D. none of them

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