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

The curie temperature of iron is about

Question # 2

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

Question # 3

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

Question # 4

There is a regular arrangement of molecules in a

Question # 5

When small number of atoms from some other suitable element is added to the semi-conductor material, then this process is known as

Question # 6

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

Question # 7

In metallic crystals which of the following thing remains constant

Question # 8

The magnetism produced by electrons within an atom can arise from

Question # 9

Lead, copper and wrought iron are examples of

Question # 10

The solids are classified as:

Question # 11

The SI unit of strain is

Question # 12

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

Question # 13

The bonding between the semi-conductor materials is

Question # 14

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

Question # 15

When a silicon crystal is doped with a pentavalent element, then the atom of the pentavalent element is known as

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them
2 In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as
A. plastic limit
B. plastic deformation
C. proportional limit
D. elastic behaviour
3 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
4 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
A. energy bands
B. energy shells
C. states
D. all of them
5 Lead, copper and wrought iron are examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
6 Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as
A. critical temperature
B. curie temperature
C. high temperature
D. fixed temperature
7 The pattern of crystalline solid is:
A. One dimesional
B. Two dimensional
C. Three dimensional
D. None of these
8 The units of modulus of elasticity are
A. Nm-2
B. Nm
C. ms-1
D. Pascal
9 The domains are of macroscopic size of the order of
A. centimeters
B. meters
C. millimeters
D. nanomneters
10 Glass and high carbon steel are the examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances

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