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 amplitude of oscillation of each atom in a metallic crystal rises with the

Question # 2

In a cubic crystal, All solids meet at:

Question # 3

A structure of polymeric solid is:

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

Question # 6

The magnetism produced by electrons within an atom can arise from

Question # 7

Each atom in metal crystal:

Question # 8

Semi-conductor elements have atoms with

Question # 9

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

Question # 10

Examples of polymeric substances are:

Question # 11

The SI unit of strain is

Question # 12

Above the curie temperature, iron becomes

Question # 13

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

Question # 14

The conduction band in a solid

Question # 15

The transition from solid state to liquid state is:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The valence band of an atom in a solid
A. is always empty
B. may or may not be empty
C. can never be empty
D. none of them
2 Tick the one which is not polymer solid:
A. Zirconia
B. Polythene
C. Nylon
D. Synthetic rubber
3 Lead, copper and wrought iron are examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
4 The maximum stress that a material can withstand, is known as
A. plastic point
B. elastic limit
C. yield point
D. ultimate tensile strength
5 The neighbours of every molecule in crystalline solids are arranged in
A. an irregular manner
B. a regular manner
C. any manner
D. none of them
6 Examples of polymeric substances are:
A. Plastic
B. Synthetic rubbers
C. Zirconia
D. All of these
7 Zirconia is classified as:
A. Ceramic solid
B. Ionic compound
C. Metal
D. Either (A) or (B)
8 In the doping process, the ratio of the doping atoms to the semi conductor atom is
A. 1 to 10
B. 1 to 103
C. 1 to 106
D. 1 to 109
9 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
10 The domains are of macroscopic size of the order of
A. centimeters
B. meters
C. millimeters
D. nanomneters

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