ECAT Pre Engineering Physics Chapter 17 MCQ Test With Answer

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

Try The 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

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

Examples of polymeric substances are:

Question # 3

The crystalline structure of NaCI is

Question # 4

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

Question # 5

If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be

Question # 6

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

Question # 7

The electrons occupying the conduction band are known as

Question # 8

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

Question # 9

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

Question # 10

The units of modulus of elasticity are

Question # 11

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

Question # 12

Examples of crystalline solids are:

Question # 13

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

Question # 14

The critical temperature of tin is

Question # 15

In a semi-conductor material, the total current is

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 Glass is an example of
A. crystalline solid
B. amorphous solid
C. polymeric solid
D. none of them
2 Within each domain, the magnetic field of all the spinning electrons are
A. parallel
B. antiparallel
C. perpendicular
D. all of them
3 The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:
A. Critical temparature
B. Temperature of vaporization
C. Melting point
D. Both (A) and (C)
4 The molecules or ions in a crystalline solids are
A. static
B. not static
C. randomly moving
D. all of them
5 The magnetism produced by electrons within an atom can arise from
A. electrons orbiting the nucleus
B. electrons posses a spin
C. both motions
D. none of these motions
6 The domains are of macroscopic size of the order of
A. centimeters
B. meters
C. millimeters
D. nanomneters
7 The whole structure obtained by the repetition of unit cells is called:
A. Crystal lattice
B. Amorphous solid
C. Polymeric solid
D. Polysterne
8 Each atom in a metal crystal vibrates about a fixed point with an amplitude that:
A. Decrease the rise in temprature
B. Is not affected by rise in temprature
C. Increase with rise in temprature
D. Both (B) and (C)
9 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
10 The substance in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them

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