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

Whenever a covalent bond is broken in an intrinsic semi-conductor

Question # 2

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

Question # 3

The bands below the valence band are

Question # 4

The magnetism produced by electrons within an atom can arise from

Question # 5

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

Question # 6

In a semi-conductor material, the total current is

Question # 7

Synthetic materials fall into the category of

Question # 8

The SI unit of strain is

Question # 9

The curie temperature of iron is about

Question # 10

Polymeric solids have

Question # 11

The domains are of macroscopic size of the order of

Question # 12

The substance in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called

Question # 13

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

Question # 14

The solids are classified as:

Question # 15

The smallest three dimensional basic structure is called as:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The greatest stress that a material can endure without losing the proportionality between stress and strain is called
A. plastic line
B. breaking point
C. proportional limit
D. none of them
2 The smallest three dimensional basic structure is called as:
A. An atom
B. Unit cell
C. Crystal lattice
D. Polymer
3 The whole structure obtained by the repetition of unit cells is called:
A. Crystal lattice
B. Amorphous solid
C. Polymeric solid
D. Polysterne
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 In a cubic crystal, All solids meet at:
A. 60o
B. 90o
C. 109o
D. 30o
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 The materials in which there are plenty of free electrons for electrical conduction are known as
A. conductors
B. insulators
C. semi-conductors
D. all of them
8 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
9 When relatively simple molecules are chemically combined into massive molecules, the reaction is called:
A. Fission reaction
B. Fusion reaction
C. Polymerization
D. Any of these
10 Amorphous solids:
A. Have definite melting points
B. Are called glassy solids
C. Have no definite melting point
D. Both (B) and (C)

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