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

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

Question # 2

Which of the following can become a good temporarily magnet

Question # 3

An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as

Question # 4

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

Question # 5

The units of modulus of elasticity are

Question # 6

The size of the domain is such that they can contain

Question # 7

The word amorphous means:

Question # 8

The vast majority of solids are in the form of

Question # 9

Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as

Question # 10

In a semi-conductor material, the total current is

Question # 11

The transition from solid to liquid is actually from:

Question # 12

Polymeric solids have

Question # 13

Tick the one which is not a crystalline solid:

Question # 14

Amorphous solids are also more like

Question # 15

Semi-conductor elements have atoms with

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 A structure of polymeric solid is:
A. An ordered structure
B. A disordered structure
C. Intermediate between order and disorder
D. Any of these
2 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
3 The crystalline structure of NaCI is
A. rectangular
B. hexagonal
C. tetrahedral
D. cubical
4 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
5 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
6 Arsenic, antimony and phosphorus are the elements from
A. third group
B. fourth group
C. fifth group
D. none of them
7 Each atom in metal crystal:
A. Remains fixed
B. Vibrates about a fixed point
C. Moves randomly
D. Rotates about center of a crystal
8 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
9 The force which maintain the strict long-range order between atoms of a crystalline solid is the:
A. Nuclear force
B. Cohesive force
C. Adhesive force
D. Coulomb force
10 When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called
A. p-type semi-conductor
B. n-type semi-conductor
C. either of them
D. none of them

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