ECAT Pre Computer Science Chapter 17 MCQ Test With Answer

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

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

Question # 2

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

Question # 3

Semi-conductor elements have atoms with

Question # 4

The smallest three dimensional basic structure is called as:

Question # 5

Tick the one which is not polymer solid:

Question # 6

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

Question # 7

There are some whose resistivity becomes zero below a certain temperature, called

Question # 8

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

Question # 9

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

Question # 10

The valence band of an atom in a solid

Question # 11

Amorphous solids:

Question # 12

Amorphous solids are also called as

Question # 13

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

Question # 14

Above the curie temperature, iron becomes

Question # 15

The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The SI unit of strain is
A. N
B. Dynes
C. Pascal
D. Dimensionless
2 Within each domain, the magnetic field of all the spinning electrons are
A. parallel
B. antiparallel
C. perpendicular
D. all of them
3 In a cubic crystal, All solids meet at:
A. 60o
B. 90o
C. 109o
D. 30o
4 The results of mechanical tests are usually expressed in terms of
A. stress
B. strain
C. stress and strain
D. neither strees nor strain
5 Above the curie temperature, iron becomes
A. ferromagnetic
B. paramagnetic
C. diamagnetic
D. any one of them
6 Experiments revealed that the ratio of the stress to the strain is a constant value for
A. different material
B. all materials
C. a given material
D. all of them
7 The critical temperature of tin is
A. 1.18 K
B. 4.2 K
C. 3.72 K
D. 7.2 K
8 Arsenic, antimony and phosphorus are the elements from
A. third group
B. fourth group
C. fifth group
D. none of them
9 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
10 The amplitude of oscillation of each atom in a metallic crystal rises with the
A. rise in temperature
B. decrease in temperature
C. even temperature remains constant
D. all of them

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