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

When a stress changes the shape, it is called the

Question # 2

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

Question # 3

Tick the one which is not a crystalline solid:

Question # 4

The smallest three dimensional basic structure is called as:

Question # 5

The results of mechanical tests are usually expressed in terms of

Question # 6

The SI unit of stress is

Question # 7

The conduction band in a solid

Question # 8

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

Question # 9

Amorphous solids:

Question # 10

A unit cell is smallest basic structure which is:

Question # 11

The doped semi-conductor materials are known as

Question # 12

The first super conductor was discovered in

Question # 13

Glass is an example of

Question # 14

The amplitude of oscillation of each atom in a metallic crystal rises with the

Question # 15

The vast majority of solids are in the form of

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The band above the valence band is called
A. high energy band
B. conduction band
C. empty band
D. none of them
2 When relatively simple molecules are chemically combined into massive molecules, the reaction is called:
A. Fission reaction
B. Fusion reaction
C. Polymerization
D. Any of these
3 The electrons occupying the conduction band are known as
A. conduction electrons
B. free electrons
C. both of them
D. none of them
4 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
5 The substance in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero,are called
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them
6 The first super conductor was discovered in
A. 1811
B. 1890
C. 1901
D. 1911
7 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
8 The molecules or ions in a crystalline solids are
A. static
B. not static
C. randomly moving
D. all of them
9 Semi-conductor elements have atoms with
A. 2 valence electrons
B. 3 valence electrons
C. 4 valence electrons
D. 5 valence electrons
10 Polymers are the chemical combination of carbon with:
A. Nitrogen
B. Oxygen
C. Hydrogen
D. All of these

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