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

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

Question # 2

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

Question # 3

The results of mechanical tests are usually expressed in terms of

Question # 4

The domains are of macroscopic size of the order of

Question # 5

An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as

Question # 6

The amplitude of oscillation of each atom in a metallic crystal rises with the

Question # 7

Glass is an example of

Question # 8

Crystalline solids are in the form of:

Question # 9

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

Question # 10

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

Question # 11

In a semi-conductor material, current flows due to

Question # 12

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

Question # 13

The bands below the valence band are

Question # 14

Glass and high carbon steel are the examples of

Question # 15

The pattern of crystalline solid is:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 Amorphous solids are also called as
A. crystalline solids
B. polymeric solids
C. glassy solids
D. any one of them
2 Glass is an example of
A. crystalline solid
B. amorphous solid
C. polymeric solid
D. none of them
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 valence band of an atom in a solid
A. is always empty
B. may or may not be empty
C. can never be empty
D. none of them
5 Recently a complex crystalline structure known as Yetrium Barium Copper Oxide have been reported to become superconductor at
A. 125 K
B. 25 K
C. 263 K
D. 163 K
6 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
7 If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be
A. permanent
B. temporary
C. either of them
D. none of them
8 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
9 The materials in which there are plenty of free electrons for electrical conduction are known as
A. conductors
B. insulators
C. semi-conductors
D. all of them
10 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them

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