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

When a stress changes length, it is called the

Question # 2

Crystalline solids are in the form of:

Question # 3

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 # 4

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

Question # 5

Amorphous solids are also called as

Question # 6

The electrons occupying the conduction band are known as

Question # 7

In a semi-conductor material, the total current is

Question # 8

The band above the valence band is called

Question # 9

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

Question # 10

The transition from solid to liquid is actually from:

Question # 11

The word amorphous means:

Question # 12

The magnetism produced by electrons within an atom can arise from

Question # 13

Which of the following can become a good temporarily magnet

Question # 14

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

Question # 15

Above the curie temperature, iron becomes

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The bonding between the semi-conductor materials is
A. covalent
B. ionic
C. either of them
D. none of them
2 A semi-conductor in its extremely pure form is known as
A. extrinsic semi-conductor
B. intrinsic semi-conductor
C. either of them
D. none of them
3 An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as
A. magnetic
B. magnetic dipole
C. magnetic monopole
D. none of them
4 In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as
A. plastic limit
B. plastic deformation
C. proportional limit
D. elastic behaviour
5 Lead, copper and wrought iron are examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
6 Glass is an example of
A. crystalline solid
B. amorphous solid
C. polymeric solid
D. none of them
7 An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:
A. 800oC
B. 500oC
C. 300oC
D. 100oC
8 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
9 Examples of crystalline solids are:
A. Cooper
B. NaCl
C. Zirconia
D. Both (A) and (B)
10 Polymeric solids have
A. low specific gravity
B. high specific gravity
C. either of them
D. none of them

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