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 smallest three dimensional basic structure is called as:

Question # 2

The bands below the valence band are

Question # 3

A semi-conductor in its extremely pure form is known as

Question # 4

A unit cell is smallest basic structure which is:

Question # 5

Amorphous solids:

Question # 6

when the deformation produced in the material become permanent, this type of behaviour is called

Question # 7

Whenever a covalent bond is broken in an intrinsic semi-conductor

Question # 8

The pattern of crystalline solid is:

Question # 9

Electrons of an isolated atom are bound to the nucleus, and

Question # 10

The maximum stress that a material can withstand, is known as

Question # 11

In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric strain is called

Question # 12

The units of modulus of elasticity are

Question # 13

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

Question # 14

Polymers are the chemical combination of carbon with:

Question # 15

The molecules or ions in a crystalline solids are

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ECAT 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 molecules or ions in a crystalline solids are
A. static
B. not static
C. randomly moving
D. all of them
3 In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric strain is called
A. Young's modulus
B. Bulk modulus
C. Shear modulus
D. all of them
4 In a soft iron, domains are
A. easily oriented along external field and do not return to original random positions
B. easily oriented along external field and readily returns to originally random position
C. do no oriented along external field and also do not returns to originally random position
D. none of them
5 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
6 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
7 The critical temperature of tin is
A. 1.18 K
B. 4.2 K
C. 3.72 K
D. 7.2 K
8 The vast majority of solids are in the form of
A. amorphous structure
B. polymeric structure
C. crystalline structure
D. all of them
9 Tick the one which is not polymer solid:
A. Zirconia
B. Polythene
C. Nylon
D. Synthetic rubber
10 The electrons in the outermost shell of an atom are called
A. core electrons
B. valence electrons
C. high energy electrons
D. none of them

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