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

Glass and high carbon steel are the examples of

Question # 2

The results of mechanical tests are usually expressed in terms of

Question # 3

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

Question # 4

The doped semi-conductor materials are known as

Question # 5

When the shear stress and shear stain are involved, then their ratio is called

Question # 6

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

Question # 7

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

Question # 8

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

Question # 9

Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called

Question # 10

Within each domain, the magnetic field of all the spinning electrons are

Question # 11

When a stress changes the shape, it is called the

Question # 12

The word amorphous means:

Question # 13

There are some whose resistivity becomes zero below a certain temperature, called

Question # 14

The bonding between the semi-conductor materials is

Question # 15

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

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 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
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them
2 The conduction band in a solid
A. may be empty
B. cannot be empty
C. should be filed
D. all of them
3 In the doping process, the ratio of the doping atoms to the semi conductor atom is
A. 1 to 10
B. 1 to 103
C. 1 to 106
D. 1 to 109
4 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
5 Amorphous solids:
A. Have definite melting points
B. Are called glassy solids
C. Have no definite melting point
D. Both (B) and (C)
6 In a soft iron, domains are
A. easily oriented along external field and do not return to original random positions
B. easily oriented along external field and readily returns to originally random position
C. do no oriented along external field and also do not returns to originally random position
D. none of them
7 Synthetic materials fall into the category of
A. crystalline solids
B. amorphous
C. polymeric solids
D. all of them
8 The greatest stress that a material can endure without losing the proportionality between stress and strain is called
A. plastic line
B. breaking point
C. proportional limit
D. none of them
9 The electrons occupying the conduction band are known as
A. conduction electrons
B. free electrons
C. both of them
D. none of them
10 Amorphous solids are also called as
A. crystalline solids
B. polymeric solids
C. glassy solids
D. any one of them

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