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

When a stress changes the shape, it is called the

Question # 2

Amorphous solids:

Question # 3

There is a regular arrangement of molecules in a

Question # 4

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

Question # 5

Synthetic materials fall into the category of

Question # 6

In the doping process, the ratio of the doping atoms to the semi conductor atom is

Question # 7

A structure of polymeric solid is:

Question # 8

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

Question # 9

Every crystalline solid has

Question # 10

In a soft iron, domains are

Question # 11

The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:

Question # 12

Examples of polymeric substances are:

Question # 13

In the phenomenon of hysteresis

Question # 14

Amorphous solids are also more like

Question # 15

The crystalline structure of NaCI is

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 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
2 In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:
A. Adhesive force
B. Nuclear forces
C. Inter atomic cohesive force
D. Electromagnetic force
3 The 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
4 The electrons occupying the conduction band are known as
A. conduction electrons
B. free electrons
C. both of them
D. none of them
5 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
6 Within each domain, the magnetic field of all the spinning electrons are
A. parallel
B. antiparallel
C. perpendicular
D. all of them
7 The size of the domain is such that they can contain
A. 102to 104atoms
B. 104 to 108atoms
C. 108to 1012atoms
D. 1012to 1016atoms
8 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
9 The results of mechanical tests are usually expressed in terms of
A. stress
B. strain
C. stress and strain
D. neither strees nor strain
10 A structure of polymeric solid is:
A. An ordered structure
B. A disordered structure
C. Intermediate between order and disorder
D. Any of these

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