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

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

Question # 2

The bonding between the semi-conductor materials is

Question # 3

The word amorphous means:

Question # 4

The bands below the valence band are

Question # 5

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

Question # 6

When relatively simple molecules are chemically combined into massive molecules, the reaction is called:

Question # 7

The doped semi-conductor materials are known as

Question # 8

Which of the following theory completely explain the three types of materials

Question # 9

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

Question # 10

Within each domain, the magnetic field of all the spinning electrons are

Question # 11

When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called

Question # 12

There are some whose resistivity becomes zero below a certain temperature, called

Question # 13

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

Question # 14

An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:

Question # 15

In a soft iron, domains are

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The smallest three dimensional basic structure in a crystalline solid is called
A. lattice point
B. crystal lattice
C. cubic crystal
D. unit cell
2 Amorphous solids are also more like
A. crystalline solids
B. gases
C. liquids
D. any one of them
3 In a semi-conductor material, current flows due to
A. positive charge
B. negative charge
C. both of them
D. none of them
4 When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called
A. p-type semi-conductor
B. n-type semi-conductor
C. either of them
D. none of them
5 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
6 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
7 Every crystalline solid has
A. definite melting point
B. different melting points
C. may or may not be definite
D. none of them
8 The smallest three dimensional basic structure is called as:
A. An atom
B. Unit cell
C. Crystal lattice
D. Polymer
9 A unit cell is smallest basic structure which is:
A. One dimensional
B. Two dimensional
C. Three dimensional
D. Four dimensional
10 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

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