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

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

Question # 2

The ratio of shearing stress/shearing strain is called as

Question # 3

The size of the domain is such that they can contain

Question # 4

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

Question # 5

Tick the one which is not a crystalline solid:

Question # 6

The band above the valence band is called

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost

Question # 11

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

Question # 12

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

Question # 13

The critical temperature of tin is

Question # 14

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

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 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 The SI unit of stress is
A. N/m2
B. Nmc
C. dynes/m
D. N
3 The curie temperature of iron is about
A. 250°C
B. 500°C
C. 750°C
D. 1000°C
4 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
5 The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them
6 Above the curie temperature, iron becomes
A. ferromagnetic
B. paramagnetic
C. diamagnetic
D. any one of them
7 The smallest three dimensional basic structure is called as:
A. An atom
B. Unit cell
C. Crystal lattice
D. Polymer
8 The materials in which there are plenty of free electrons for electrical conduction are known as
A. conductors
B. insulators
C. semi-conductors
D. all of them
9 Which of the following can become a good permanent magnet
A. iron
B. steel
C. both of them
D. none of them
10 An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:
A. 800oC
B. 500oC
C. 300oC
D. 100oC

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