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

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

Question # 2

The modulus of elasticity can be written as

Question # 3

The curie temperature of iron is about

Question # 4

A unit cell is smallest basic structure which is:

Question # 5

Above the curie temperature, iron becomes

Question # 6

The materials in which there are plenty of free electrons for electrical conduction are known as

Question # 7

In metallic crystals which of the following thing remains constant

Question # 8

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

Question # 9

The magnetism produced by electrons within an atom can arise from

Question # 10

The size of the domain is such that they can contain

Question # 11

Arsenic, antimony and phosphorus are the elements from

Question # 12

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

Question # 13

Tick the one which is not a crystalline solid:

Question # 14

Semi-conductor elements have atoms with

Question # 15

Recently a complex crystalline structure known as Yetrium Barium Copper Oxide have been reported to become superconductor at

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 When a stress changes the shape, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
2 A unit cell is smallest basic structure which is:
A. One dimensional
B. Two dimensional
C. Three dimensional
D. Four dimensional
3 The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are
A. 5
B. 7
C. 9
D. 14
4 The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as
A. conductors
B. insulators
C. semi-conductors
D. all of them
5 Polymeric solids have
A. low specific gravity
B. high specific gravity
C. either of them
D. none of them
6 There are some whose resistivity becomes zero below a certain temperature, called
A. absolute zero
B. 0°C
C. critical temperature
D. lower fixed point
7 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
8 The curie temperature of iron is about
A. 250°C
B. 500°C
C. 750°C
D. 1000°C
9 The bands below the valence band are
A. completely filled and play active part in conduction process
B. completely filled and plays no part in conduction process
C. completely filled and play active part in conduction process
D. not completely filled and play no part in conduction process
10 Within each domain, the magnetic field of all the spinning electrons are
A. parallel
B. antiparallel
C. perpendicular
D. all of them

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