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

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 # 2

The smallest three dimensional basic structure is called as:

Question # 3

Above the curie temperature, iron becomes

Question # 4

In a semi-conductor material, current flows due to

Question # 5

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

Question # 6

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

Question # 7

The ratio of shearing stress/shearing strain is called as

Question # 8

The doped semi-conductor materials are known as

Question # 9

The electrons occupying the conduction band are known as

Question # 10

The crystalline structure of NaCI is

Question # 11

When a stress changes length, it is called the

Question # 12

When a stress changes the shape, it is called the

Question # 13

The first super conductor was discovered in

Question # 14

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

Question # 15

Amorphous solids:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The ability of the body to return to its original shape is called
A. deformation
B. stretching
C. compressing
D. elasticity
2 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
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 maximum stress that a material can withstand, is known as
A. plastic point
B. elastic limit
C. yield point
D. ultimate tensile strength
5 In a semi-conductor material, the total current is
A. only the +ve current
B. only the electronic current
C. sum of +ve and electronic current
D. all of them
6 The ratio of linear stress/linear strain is called as
A. Yong's modulus
B. Bulk modulus
C. Shear modulus
D. Modulus
7 Electrons of an isolated atom are bound to the nucleus, and
A. can only have distinct energy level
B. can only have same energy level
C. may or may not have distinct energy levels
D. none of these
8 Amorphous solids:
A. Have definite melting points
B. Are called glassy solids
C. Have no definite melting point
D. Both (B) and (C)
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 The smallest three dimensional basic structure in a crystalline solid is called
A. lattice point
B. crystal lattice
C. cubic crystal
D. unit cell

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