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

Every crystalline solid has

Question # 2

The molecules or ions in a crystalline solids are

Question # 3

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

Question # 4

Amorphous solids:

Question # 5

The magnetism produced by electrons within an atom can arise from

Question # 6

There is a regular arrangement of molecules in a

Question # 7

The force applied on unit area to produce any change in the shape, volume or length of a body is known as

Question # 8

The curie temperature of iron is about

Question # 9

The smallest three dimensional basic structure is called as:

Question # 10

The units of modulus of elasticity are

Question # 11

Lead, copper and wrought iron are examples of

Question # 12

The materials in which there are plenty of free electrons for electrical conduction are known as

Question # 13

In the doping process, the ratio of the doping atoms to the semi conductor atom is

Question # 14

The substance in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero,are called

Question # 15

An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:

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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 Lead, copper and wrought iron are examples of
A. brittle substances
B. ductile substances
C. plastic substances
D. elastic substances
3 The force which maintain the strict long-range order between atoms of a crystalline solid is the:
A. Nuclear force
B. Cohesive force
C. Adhesive force
D. Coulomb force
4 The amplitude of oscillation of each atom in a metallic crystal rises with the
A. rise in temperature
B. decrease in temperature
C. even temperature remains constant
D. all of them
5 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
6 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
7 An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:
A. 800oC
B. 500oC
C. 300oC
D. 100oC
8 The SI unit of strain is
A. N
B. Dynes
C. Pascal
D. Dimensionless
9 Recently a complex crystalline structure known as Yetrium Barium Copper Oxide have been reported to become superconductor at
A. 125 K
B. 25 K
C. 263 K
D. 163 K
10 Any superconductor with critical temperature above 77 K, is referred as
A. low temperature superconductor
B. high temperature superconductor
C. very low temperature superconductor
D. none of them

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