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 smallest three dimensional basic structure in a crystalline solid is called

Question # 2

Synthetic materials fall into the category of

Question # 3

Which of the following can become a good temporarily magnet

Question # 4

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

Question # 5

The transition from solid state to liquid state is:

Question # 6

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

Question # 7

There is a regular arrangement of molecules in a

Question # 8

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

Question # 9

The conduction band in a solid

Question # 10

The domains are of macroscopic size of the order of

Question # 11

When a large number of atoms are brought close to one another to form a solid, each energy level of an isolated atom splits into sub-levels, called

Question # 12

Above the curie temperature, iron becomes

Question # 13

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

Question # 14

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

Question # 15

Amorphous solids are also more like

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 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
2 The smallest three dimensional basic structure in a crystalline solid is called
A. lattice point
B. crystal lattice
C. cubic crystal
D. unit cell
3 The 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 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
5 The curie temperature of iron is about
A. 250°C
B. 500°C
C. 750°C
D. 1000°C
6 The modulus of elasticity can be written as
A. stress x strain
B. strain/stress
C. 1/2 x stress x strain
D. stress/strain
7 The size of the domain is such that they can contain
A. 102to 104atoms
B. 104 to 108atoms
C. 108to 1012atoms
D. 1012to 1016atoms
8 when the deformation produced in the material become permanent, this type of behaviour is called
A. proportionality
B. elasticity
C. plasticity
D. none of them
9 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
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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