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 critical temperature of aluminium is

Question # 2

The amplitude of oscillation of each atom in a metallic crystal rises with the

Question # 3

The pattern of crystalline solid is:

Question # 4

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

Question # 5

An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as

Question # 6

The SI unit of stress is

Question # 7

Lead, copper and wrought iron are examples of

Question # 8

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 # 9

The solids which has structure in-between order and disorder are called

Question # 10

The vast majority of solids are in the form of

Question # 11

A structure of polymeric solid is:

Question # 12

Electrons of an isolated atom are bound to the nucleus, and

Question # 13

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 # 14

The greatest stress that a material can endure without losing the proportionality between stress and strain is called

Question # 15

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

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The curie temperature of iron is about
A. 250°C
B. 500°C
C. 750°C
D. 1000°C
2 The charged nucleus of an atom itself spins its magnetic field
A. equal to the field produced by orbital electrons
B. greater than the field produced by orbital electrons
C. much weaker than the field produced by orbital electrons
D. none of these
3 Polymeric solids have
A. low specific gravity
B. high specific gravity
C. either of them
D. none of them
4 Tick the one which is not a crystalline solid:
A. Zirconia
B. Glass
C. Copper
D. Ceramic solid
5 The units of modulus of elasticity are
A. Nm-2
B. Nm
C. ms-1
D. Pascal
6 The solids are classified as:
A. Metals
B. Crystalline
C. Amorphous
D. Polymeric
7 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
8 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
9 Amorphous solids are also more like
A. crystalline solids
B. gases
C. liquids
D. any one of them
10 The word amorphous means:
A. Without any structure
B. With definite structure
C. Regular arrangement of molecules
D. Both (B) and (C)

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