ECAT Pre Engineering Physics Chapter 17 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Question # 1

The critical temperature of mercury is

Question # 2

Arsenic, antimony and phosphorus are the elements from

Question # 3

Experiments revealed that the ratio of the stress to the strain is a constant value for

Question # 4

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

Question # 5

Which of the following can become a good permanent magnet

Question # 6

Which of the following can become a good temporarily magnet

Question # 7

In the phenomenon of hysteresis

Question # 8

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

Question # 9

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

Question # 10

Glass and high carbon steel are the examples of

Question # 11

The ratio of linear stress/linear strain is called as

Question # 12

A structure of polymeric solid is:

Question # 13

The neighbours of every molecule in crystalline solids are arranged in

Question # 14

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

Question # 15

On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are
A. 5
B. 7
C. 9
D. 14
2 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
3 The SI unit of strain is
A. N
B. Dynes
C. Pascal
D. Dimensionless
4 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
5 In a semi-conductor material, current flows due to
A. positive charge
B. negative charge
C. both of them
D. none of them
6 The word amorphous means:
A. Without any structure
B. With definite structure
C. Regular arrangement of molecules
D. Both (B) and (C)
7 The ratio of shearing stress/shearing strain is called as
A. Modulus
B. Pascal modulus
C. Hooker's modulus
D. Shear modulus
8 In the doping process, the ratio of the doping atoms to the semi conductor atom is
A. 1 to 10
B. 1 to 103
C. 1 to 106
D. 1 to 109
9 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
10 The molecules or ions in a crystalline solids are
A. static
B. not static
C. randomly moving
D. all of them

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