ECAT Pre Computer Science Chapter 17 MCQ Test With Answer

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

Try The 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

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

Question # 2

Amorphous solids:

Question # 3

When a stress changes the shape, it is called the

Question # 4

Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The charged nucleus of an atom itself spins its magnetic field

Question # 9

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

Question # 10

Arsenic, antimony and phosphorus are the elements from

Question # 11

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

Question # 12

The domains are of macroscopic size of the order of

Question # 13

The transition from solid to liquid is actually from:

Question # 14

In a semi-conductor material, the total current is

Question # 15

Which of the following theory completely explain the three types of materials

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 In metallic crystals which of the following thing remains constant
A. amplitude of oscillations
B. temperature of solid
C. average atomic positions
D. all of them
2 Lead, copper and wrought iron are examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
3 Glass and high carbon steel are the examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
4 The ratio of linear stress/linear strain is called as
A. Yong's modulus
B. Bulk modulus
C. Shear modulus
D. Modulus
5 Which of the following theory completely explain the three types of materials
A. Bohr model of electron distribution
B. Rutherford atomic model
C. Pauli's exclusion principle
D. energy band theory
6 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
7 The SI unit of stress is
A. N/m2
B. Nmc
C. dynes/m
D. N
8 The word amorphous means:
A. Without any structure
B. With definite structure
C. Regular arrangement of molecules
D. Both (B) and (C)
9 Substances which break just after the elastic limit is reached, are known as
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
10 Electrons of an isolated atom are bound to the nucleus, and
A. can only have distinct energy level
B. can only have same energy level
C. may or may not have distinct energy levels
D. none of these

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