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

In metallic crystals which of the following thing remains constant

Question # 2

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

Question # 3

In a semi-conductor material, the total current is

Question # 4

The maximum stress that a material can withstand, is known as

Question # 5

Amorphous solids:

Question # 6

Any superconductor with critical temperature above 77 K, is referred as

Question # 7

In the doping process, the ratio of the doping atoms to the semi conductor atom is

Question # 8

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

Question # 9

The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called

Question # 10

Under the elastic region, the deformation produced in the material, the deformation produced in the material will be

Question # 11

The transition from solid to liquid is actually from:

Question # 12

The neighbours of every molecule in crystalline solids are arranged in

Question # 13

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

Question # 14

Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as

Question # 15

An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:
A. Critical temparature
B. Temperature of vaporization
C. Melting point
D. Both (A) and (C)
2 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
3 The smallest three dimensional basic structure in a crystalline solid is called
A. lattice point
B. crystal lattice
C. cubic crystal
D. unit cell
4 Glass and high carbon steel are the examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
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 Examples of crystalline solids are:
A. Cooper
B. NaCl
C. Zirconia
D. Both (A) and (B)
7 Amorphous solids are also more like
A. crystalline solids
B. gases
C. liquids
D. any one of them
8 There is a regular arrangement of molecules in a
A. amorphous solids
B. polymeric solids
C. crystalline solids
D. none of them
9 In metallic crystals which of the following thing remains constant
A. amplitude of oscillations
B. temperature of solid
C. average atomic positions
D. all of them
10 Lead, copper and wrought iron are examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances

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