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

The smallest three dimensional basic structure in a crystalline solid is called

Question # 2

When the shear stress and shear stain are involved, then their ratio is called

Question # 3

The band above the valence band is called

Question # 4

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

Question # 5

The arrangement or molecules or atoms in a crystalline solid can be studied by using:

Question # 6

When a stress changes the shape, it is called the

Question # 7

The molecules or ions in a crystalline solids are

Question # 8

The magnetism produced by electrons within an atom can arise from

Question # 9

Each atom in a metal crystal vibrates about a fixed point with an amplitude that:

Question # 10

The substance in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called

Question # 11

Amorphous solids:

Question # 12

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

Question # 13

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

Question # 14

The SI unit of strain is

Question # 15

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
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 pattern of crystalline solid is:
A. One dimesional
B. Two dimensional
C. Three dimensional
D. None of these
4 The solids are classified as:
A. Metals
B. Crystalline
C. Amorphous
D. Polymeric
5 The results of mechanical tests are usually expressed in terms of
A. stress
B. strain
C. stress and strain
D. neither strees nor strain
6 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)
7 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
8 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
9 The critical temperature of aluminium is
A. 1.18 K
B. 4.2 K
C. 3.72 K
D. 7.2 K
10 A unit cell is smallest basic structure which is:
A. One dimensional
B. Two dimensional
C. Three dimensional
D. Four dimensional

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