ECAT Pre Computer Science Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 17 Physics of Solids

Try The MCQ's Test For ECAT Physics Chapter 17 Physics of Solids

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ECAT Physics Chapter 17 Physics of Solids

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Question # 1

In metallic crystals which of the following thing remains constant

Question # 2

Polymers are the chemical combination of carbon with:

Question # 3

Any superconductor with critical temperature above 77 K, is referred as

Question # 4

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

Question # 5

Which of the following can become a good permanent magnet

Question # 6

The SI unit of strain is

Question # 7

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

Question # 8

The modulus of elasticity can be written as

Question # 9

The conduction band in a solid

Question # 10

The critical temperature of tin is

Question # 11

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

Question # 12

The charged nucleus of an atom itself spins its magnetic field

Question # 13

If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be

Question # 14

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

Question # 15

In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
4 The valence band of an atom in a solid
A. is always empty
B. may or may not be empty
C. can never be empty
D. none of them
5 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
6 Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called
A. tiny regions
B. domains
C. vectors
D. none of them
7 The charged nucleus of an atom itself spins its magnetic field
A. equal to the field produced by orbital electrons
B. greater than the field produced by orbital electrons
C. much weaker than the field produced by orbital electrons
D. none of these
8 When a silicon crystal is doped with a pentavalent element, then the atom of the pentavalent element is known as
A. acceptor
B. donor
C. either of them
D. none of them
9 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
10 Tick the one which is not polymer solid:
A. Zirconia
B. Polythene
C. Nylon
D. Synthetic rubber

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