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

Which of the following can become a good temporarily magnet

Question # 2

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

Question # 3

The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are

Question # 4

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

Question # 5

The first super conductor was discovered in

Question # 6

Tick the one which is not a crystalline solid:

Question # 7

The units of modulus of elasticity are

Question # 8

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

Question # 9

When relatively simple molecules are chemically combined into massive molecules, the reaction is called:

Question # 10

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

Question # 11

The transition from solid to liquid is actually from:

Question # 12

Amorphous solids are also called as

Question # 13

A unit cell is smallest basic structure which is:

Question # 14

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

Question # 15

The substances which break just after the elastic limit is reached, are known as

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 When small number of atoms from some other suitable element is added to the semi-conductor material, then this process is known as
A. impurification
B. adding
C. doping
D. extrinsivity
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 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
4 The solids are classified as:
A. Metals
B. Crystalline
C. Amorphous
D. Polymeric
5 The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are
A. 5
B. 7
C. 9
D. 14
6 The doped semi-conductor materials are known as
A. intrinsic semi-conductor
B. extrinsic semi-conductor
C. either of them
D. none of them
7 Amorphous solids:
A. Have definite melting points
B. Are called glassy solids
C. Have no definite melting point
D. Both (B) and (C)
8 Tick the one which is not polymer solid:
A. Zirconia
B. Polythene
C. Nylon
D. Synthetic rubber
9 Examples of polymeric substances are:
A. Plastic
B. Synthetic rubbers
C. Zirconia
D. All of these
10 A semi-conductor in its extremely pure form is known as
A. extrinsic semi-conductor
B. intrinsic semi-conductor
C. either of them
D. none of them

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