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 solids are classified as:

Question # 2

Crystalline solids are in the form of:

Question # 3

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

Question # 4

The critical temperature of mercury is

Question # 5

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

Question # 6

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

Question # 7

Each atom in a metal crystal vibrates about a fixed point with an amplitude that:

Question # 8

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

Question # 9

When the shear stress and shear stain are involved, then their ratio is called

Question # 10

The size of the domain is such that they can contain

Question # 11

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

Question # 12

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 # 13

In metallic crystals which of the following thing remains constant

Question # 14

The modulus of elasticity can be written as

Question # 15

The critical temperature of aluminium is

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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 force applied on unit area to produce any change in the shape, volume or length of a body is known as
A. strain
B. elasticity
C. stretching
D. stress
3 There is a regular arrangement of molecules in a
A. amorphous solids
B. polymeric solids
C. crystalline solids
D. none of them
4 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
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them
5 On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost
A. 600°C
B. 7600°C
C. 800°C
D. 900°C
6 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
7 In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric strain is called
A. Young's modulus
B. Bulk modulus
C. Shear modulus
D. all of them
8 Synthetic materials fall into the category of
A. crystalline solids
B. amorphous
C. polymeric solids
D. all of them
9 A unit cell is smallest basic structure which is:
A. One dimensional
B. Two dimensional
C. Three dimensional
D. Four dimensional
10 Each atom in metal crystal:
A. Remains fixed
B. Vibrates about a fixed point
C. Moves randomly
D. Rotates about center of a crystal

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