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

Amorphous solids:

Question # 2

When a large number of atoms are brought close to one another to form a solid, each energy level of an isolated atom splits into sub-levels, called

Question # 3

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

Question # 4

Each atom in metal crystal:

Question # 5

On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost

Question # 6

The pattern of NaCl particles have a shape which is :

Question # 7

The substance in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero,are called

Question # 8

The modulus of elasticity can be written as

Question # 9

Zirconia is classified as:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

In a semi-conductor material, current flows due to

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The force applied on unit area to produce any change in the shape, volume or length of a body is known as
A. strain
B. elasticity
C. stretching
D. stress
2 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)
3 The vast majority of solids are in the form of
A. amorphous structure
B. polymeric structure
C. crystalline structure
D. all of them
4 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
5 The SI unit of stress is
A. N/m2
B. Nmc
C. dynes/m
D. N
6 Every crystalline solid has
A. definite melting point
B. different melting points
C. may or may not be definite
D. none of them
7 In the phenomenon of hysteresis
A. magnetism leads the magnetising current
B. magnetism lags behind the magnetising current
C. meganetism goes along the magnetising current
D. none of them
8 When a large number of atoms are brought close to one another to form a solid, each energy level of an isolated atom splits into sub-levels, called
A. energy bands
B. energy shells
C. states
D. all of them
9 The first super conductor was discovered in
A. 1811
B. 1890
C. 1901
D. 1911
10 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

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