ECAT Pre Engineering Physics Chapter 17 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Question # 1

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

Question # 2

In a soft iron, domains are

Question # 3

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

Question # 4

When small number of atoms from some other suitable element is added to the semi-conductor material, then this process is known as

Question # 5

Amorphous solids are also called as

Question # 6

If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be

Question # 7

When a silicon crystal is doped with a pentavalent element, then the atom of the pentavalent element is known as

Question # 8

The solids are classified as:

Question # 9

Each atom in a metal crystal vibrates about a fixed point with an amplitude that:

Question # 10

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

Question # 11

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

Question # 12

Amorphous solids are also more like

Question # 13

The transition from solid state to liquid state is:

Question # 14

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

Question # 15

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

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 When small number of atoms from some other suitable element is added to the semi-conductor material, then this process is known as
A. impurification
B. adding
C. doping
D. extrinsivity
2 The solids are classified as:
A. Metals
B. Crystalline
C. Amorphous
D. Polymeric
3 The band above the valence band is called
A. high energy band
B. conduction band
C. empty band
D. none of them
4 There is a regular arrangement of molecules in a
A. amorphous solids
B. polymeric solids
C. crystalline solids
D. none of them
5 Polymeric solids have
A. low specific gravity
B. high specific gravity
C. either of them
D. none of them
6 Examples of polymeric substances are:
A. Plastic
B. Synthetic rubbers
C. Zirconia
D. All of these
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 Each atom in a metal crystal vibrates about a fixed point with an amplitude that:
A. Decrease the rise in temprature
B. Is not affected by rise in temprature
C. Increase with rise in temprature
D. Both (B) and (C)
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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