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 domains are of macroscopic size of the order of

Question # 2

The doped semi-conductor materials are known as

Question # 3

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

Question # 4

The transition from solid state to liquid state is:

Question # 5

The critical temperature of mercury is

Question # 6

The critical temperature of tin is

Question # 7

The substance in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero,are called

Question # 8

In the doping process, the ratio of the doping atoms to the semi conductor atom is

Question # 9

Under the elastic region, the deformation produced in the material, the deformation produced in the material will be

Question # 10

In a semi-conductor material, the total current is

Question # 11

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

Question # 12

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

Question # 13

The magnetism produced by electrons within an atom can arise from

Question # 14

In metallic crystals which of the following thing remains constant

Question # 15

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

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 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
2 The 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
3 The SI unit of strain is
A. N
B. Dynes
C. Pascal
D. Dimensionless
4 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
5 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
6 The measure of the deformation in a solid when stress is applied to its is called
A. elastic constant
B. young's modulus
C. strain
D. elasticity
7 On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost
A. 600°C
B. 7600°C
C. 800°C
D. 900°C
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 The greatest stress that a material can endure without losing the proportionality between stress and strain is called
A. plastic line
B. breaking point
C. proportional limit
D. none of them
10 The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:
A. Critical temparature
B. Temperature of vaporization
C. Melting point
D. Both (A) and (C)

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  • farooq,khan

    farooq,khan

    17 Oct 2018

    when,stress,apply,change,in,length,called,tensil,stress

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