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

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

Question # 2

Amorphous solids:

Question # 3

Zirconia is classified as:

Question # 4

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

Question # 5

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

Question # 6

Tick the one which is not polymer solid:

Question # 7

The electrons in the outermost shell of an atom are called

Question # 8

The conduction band in a solid

Question # 9

Above the curie temperature, iron becomes

Question # 10

The domains are of macroscopic size of the order of

Question # 11

Semi-conductor elements have atoms with

Question # 12

Glass is an example of

Question # 13

Which of the following can become a good permanent magnet

Question # 14

There is a regular arrangement of molecules in a

Question # 15

Examples of polymeric substances are:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 Polymers are the chemical combination of carbon with:
A. Nitrogen
B. Oxygen
C. Hydrogen
D. All of these
2 On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost
A. 600°C
B. 7600°C
C. 800°C
D. 900°C
3 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
4 The bonding between the semi-conductor materials is
A. covalent
B. ionic
C. either of them
D. none of them
5 Amorphous solids:
A. Have definite melting points
B. Are called glassy solids
C. Have no definite melting point
D. Both (B) and (C)
6 The crystalline structure of NaCI is
A. rectangular
B. hexagonal
C. tetrahedral
D. cubical
7 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
8 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
9 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
10 When a stress changes the shape, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them

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