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

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

Question # 2

In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric strain is called

Question # 3

When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called

Question # 4

The valence band of an atom in a solid

Question # 5

The maximum stress that a material can withstand, is known as

Question # 6

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

Question # 7

The ratio of shearing stress/shearing strain is called as

Question # 8

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

Question # 9

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

Question # 10

Amorphous solids are also more like

Question # 11

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

Question # 12

The molecules or ions in a crystalline solids are

Question # 13

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

Question # 14

Any superconductor with critical temperature above 77 K, is referred as

Question # 15

The transition from solid to liquid is actually from:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 There is a regular arrangement of molecules in a
A. amorphous solids
B. polymeric solids
C. crystalline solids
D. none of them
2 The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict
A. short range order
B. long range order
C. both of them
D. none of them
3 The pattern of NaCl particles have a shape which is :
A. Cubic
B. Body centred cubic
C. Simple cubic
D. face centred
4 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
5 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
6 The SI unit of strain is
A. N
B. Dynes
C. Pascal
D. Dimensionless
7 When a silicon crystal is doped with a pentavalent element, then the atom of the pentavalent element is known as
A. acceptor
B. donor
C. either of them
D. none of them
8 The units of modulus of elasticity are
A. Nm-2
B. Nm
C. ms-1
D. Pascal
9 Examples of polymeric substances are:
A. Plastic
B. Synthetic rubbers
C. Zirconia
D. All of these
10 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

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