ECAT Pre Computer Science Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 17 Physics of Solids

Try The 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

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 # 2

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

Question # 3

The curie temperature of iron is about

Question # 4

The SI unit of stress is

Question # 5

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

Question # 6

Arsenic, antimony and phosphorus are the elements from

Question # 7

In a semi-conductor material, current flows due to

Question # 8

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

Question # 9

The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:

Question # 10

The crystalline structure of NaCI is

Question # 11

The vast majority of solids are in the form of

Question # 12

The ratio of linear stress/linear strain is called as

Question # 13

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

Question # 14

The first super conductor was discovered in

Question # 15

The transition from solid to liquid is actually from:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The electrons in the outermost shell of an atom are called
A. core electrons
B. valence electrons
C. high energy electrons
D. none of them
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 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
4 The vast majority of solids are in the form of
A. amorphous structure
B. polymeric structure
C. crystalline structure
D. all of them
5 Electrons of an isolated atom are bound to the nucleus, and
A. can only have distinct energy level
B. can only have same energy level
C. may or may not have distinct energy levels
D. none of these
6 Semi-conductor elements have atoms with
A. 2 valence electrons
B. 3 valence electrons
C. 4 valence electrons
D. 5 valence electrons
7 The measure of the deformation in a solid when stress is applied to its is called
A. elastic constant
B. young's modulus
C. strain
D. elasticity
8 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
9 Polymers are the chemical combination of carbon with:
A. Nitrogen
B. Oxygen
C. Hydrogen
D. All of these
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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