ECAT Pre Engineering Physics Chapter 17 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 17 Physics of Solid

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Question # 1

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

Question # 2

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

Question # 3

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

Question # 4

The transition from solid to liquid is actually from:

Question # 5

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

Question # 6

Above the curie temperature, iron becomes

Question # 7

The force applied on unit area to produce any change in the shape, volume or length of a body is known as

Question # 8

The greatest stress that a material can endure without losing the proportionality between stress and strain is called

Question # 9

The ratio of shearing stress/shearing strain is called as

Question # 10

Examples of polymeric substances are:

Question # 11

The vast majority of solids are in the form of

Question # 12

In a semi-conductor material, the total current is

Question # 13

The molecules or ions in a crystalline solids are

Question # 14

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

Question # 15

Tick the one which is not a crystalline solid:

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ECAT Class Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 Whenever a covalent bond is broken in an intrinsic semi-conductor
A. hole is created
B. an electron is created
C. an electron-hole pair is generated
D. all of them
2 The electrons occupying the conduction band are known as
A. conduction electrons
B. free electrons
C. both of them
D. none of them
3 Tick the one which is not polymer solid:
A. Zirconia
B. Polythene
C. Nylon
D. Synthetic rubber
4 The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict
A. short range order
B. long range order
C. both of them
D. none of them
5 The doped semi-conductor materials are known as
A. intrinsic semi-conductor
B. extrinsic semi-conductor
C. either of them
D. none of them
6 Semi-conductor elements have atoms with
A. 2 valence electrons
B. 3 valence electrons
C. 4 valence electrons
D. 5 valence electrons
7 The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them
8 The modulus of elasticity can be written as
A. stress x strain
B. strain/stress
C. 1/2 x stress x strain
D. stress/strain
9 Arsenic, antimony and phosphorus are the elements from
A. third group
B. fourth group
C. fifth group
D. none of them
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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