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

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

Question # 2

When a stress changes length, it is called the

Question # 3

The arrangement or molecules or atoms in a crystalline solid can be studied by using:

Question # 4

Zirconia is classified as:

Question # 5

The units of modulus of elasticity are

Question # 6

The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are

Question # 7

The neighbours of every molecule in crystalline solids are arranged in

Question # 8

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

Question # 9

Tick the one which is not polymer solid:

Question # 10

Polymeric solids have

Question # 11

The band above the valence band is called

Question # 12

Each atom in metal crystal:

Question # 13

The conduction band in a solid

Question # 14

The bonding between the semi-conductor materials is

Question # 15

In a soft iron, domains are

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 In a cubic crystal, All solids meet at:
A. 60o
B. 90o
C. 109o
D. 30o
2 The size of the domain is such that they can contain
A. 102to 104atoms
B. 104 to 108atoms
C. 108to 1012atoms
D. 1012to 1016atoms
3 Any superconductor with critical temperature above 77 K, is referred as
A. low temperature superconductor
B. high temperature superconductor
C. very low temperature superconductor
D. none of them
4 The crystalline structure of NaCI is
A. rectangular
B. hexagonal
C. tetrahedral
D. cubical
5 The bonding between the semi-conductor materials is
A. covalent
B. ionic
C. either of them
D. none of them
6 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
7 When a stress changes the shape, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
8 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
A. energy bands
B. energy shells
C. states
D. all of them
9 The arrangement or molecules or atoms in a crystalline solid can be studied by using:
A. Chemical methods
B. Neutrons
C. X-ray techniques
D. Copper atoms
10 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

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