ECAT Pre General Science Physics Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 17 Physics of Solids

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ECAT Pre General Science Physics Chapter 17 Physics of Solids

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Question # 1

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

Question # 2

Semi-conductor elements have atoms with

Question # 3

Which of the following theory completely explain the three types of materials

Question # 4

The ability of the body to return to its original shape is called

Question # 5

Under the elastic region, the deformation produced in the material, the deformation produced in the material will be

Question # 6

Above the curie temperature, iron becomes

Question # 7

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

Question # 8

The greatest stress that a material can endure without losing the proportionality between stress and strain is called

Question # 9

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

Question # 10

There is a regular arrangement of molecules in a

Question # 11

Glass and high carbon steel are the examples of

Question # 12

Tick the one which is not a crystalline solid:

Question # 13

The modulus of elasticity can be written as

Question # 14

Every crystalline solid has

Question # 15

The results of mechanical tests are usually expressed in terms of

Question # 16

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

Question # 17

In a semi-conductor material, the total current is

Question # 18

The charged nucleus of an atom itself spins its magnetic field

Question # 19

Lead, copper and wrought iron are examples of

Question # 20

The curie temperature of iron is about

Question # 21

Crystalline solids are in the form of:

Question # 22

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

Question # 23

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

Question # 24

A unit cell is smallest basic structure which is:

Question # 25

Examples of crystalline solids are:

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

Arsenic, antimony and phosphorus are the elements from

Question # 30

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

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 In the phenomenon of hysteresis
A. magnetism leads the magnetising current
B. magnetism lags behind the magnetising current
C. meganetism goes along the magnetising current
D. none of them
2 When the shear stress and shear stain are involved, then their ratio is called
A. Young's modulus
B. Bulk modulus
C. Shear modulus
D. all of them
3 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
4 The valence band of an atom in a solid
A. is always empty
B. may or may not be empty
C. can never be empty
D. none of them
5 The magnetism produced by electrons within an atom can arise from
A. electrons orbiting the nucleus
B. electrons posses a spin
C. both motions
D. none of these motions
6 In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric strain is called
A. Young's modulus
B. Bulk modulus
C. Shear modulus
D. all of them
7 The ratio of linear stress/linear strain is called as
A. Yong's modulus
B. Bulk modulus
C. Shear modulus
D. Modulus
8 If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be
A. permanent
B. temporary
C. either of them
D. none of them
9 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
10 Which of the following theory completely explain the three types of materials
A. Bohr model of electron distribution
B. Rutherford atomic model
C. Pauli's exclusion principle
D. energy band theory

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