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

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

Question # 2

A semi-conductor in its extremely pure form is known as

Question # 3

The critical temperature of mercury is

Question # 4

The materials in which there are plenty of free electrons for electrical conduction are known as

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The units of modulus of elasticity are

Question # 9

The charged nucleus of an atom itself spins its magnetic field

Question # 10

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

Question # 11

Which of the following theory completely explain the three types of materials

Question # 12

Which of the following can become a good permanent magnet

Question # 13

The ability of the body to return to its original shape is called

Question # 14

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

Question # 15

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

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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 Crystalline solids are in the form of:
A. Metals
B. Ionic Compounds
C. Ceramics
D. Both (A) and (B)
3 When the shear stress and shear stain are involved, then their ratio is called
A. Young's modulus
B. Bulk modulus
C. Shear modulus
D. all of them
4 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
5 The ratio of linear stress/linear strain is called as
A. Yong's modulus
B. Bulk modulus
C. Shear modulus
D. Modulus
6 The charged nucleus of an atom itself spins its magnetic field
A. equal to the field produced by orbital electrons
B. greater than the field produced by orbital electrons
C. much weaker than the field produced by orbital electrons
D. none of these
7 The band above the valence band is called
A. high energy band
B. conduction band
C. empty band
D. none of them
8 The bonding between the semi-conductor materials is
A. covalent
B. ionic
C. either of them
D. none of them
9 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
10 The pattern of crystalline solid is:
A. One dimesional
B. Two dimensional
C. Three dimensional
D. None of these

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