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

Examples of crystalline solids are:

Question # 2

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

Question # 3

In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:

Question # 4

The first super conductor was discovered in

Question # 5

The solids are classified as:

Question # 6

The bands below the valence band are

Question # 7

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

Question # 8

Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called

Question # 9

When small number of atoms from some other suitable element is added to the semi-conductor material, then this process is known as

Question # 10

A structure of polymeric solid is:

Question # 11

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

Question # 12

The substance in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called

Question # 13

Amorphous solids:

Question # 14

The smallest three dimensional basic structure is called as:

Question # 15

The doped semi-conductor materials are known as

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 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
2 The bonding between the semi-conductor materials is
A. covalent
B. ionic
C. either of them
D. none of them
3 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
4 The curie temperature of iron is about
A. 250°C
B. 500°C
C. 750°C
D. 1000°C
5 In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:
A. Adhesive force
B. Nuclear forces
C. Inter atomic cohesive force
D. Electromagnetic force
6 When relatively simple molecules are chemically combined into massive molecules, the reaction is called:
A. Fission reaction
B. Fusion reaction
C. Polymerization
D. Any of these
7 The size of the domain is such that they can contain
A. 102to 104atoms
B. 104 to 108atoms
C. 108to 1012atoms
D. 1012to 1016atoms
8 Every crystalline solid has
A. definite melting point
B. different melting points
C. may or may not be definite
D. none of them
9 Each atom in metal crystal:
A. Remains fixed
B. Vibrates about a fixed point
C. Moves randomly
D. Rotates about center of a crystal
10 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

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