ECAT Pre General Science Chapter 17 online mcq test with answers for Physics chapter 17 (Physics of Solids)

Question # 1

The conduction band in a solid

may be empty A
cannot be empty B
should be filed C
all of them D

Question # 2

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

absolute zero A
0°C B
critical temperature C
lower fixed point D

Question # 3

The smallest three dimensional basic structure in a crystalline solid is called

lattice point A
crystal lattice B
cubic crystal C
unit cell D

Question # 4

Substances which break just after the elastic limit is reached, are known as

brittle substances A
ductile substances B
plastic substances C
elastic substances D

Question # 5

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

critical temperature A
curie temperature B
high temperature C
fixed temperature D

Question # 6

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

different material A
all materials B
a given material C
all of them D

Question # 7

In a cubic crystal, All solids meet at:

60^o A
90^o B
109^o C
30^o D
10^o E

Question # 8

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

Nuclear force A
Cohesive force B
Adhesive force C
Coulomb force D
None of these E

Question # 9

Crystalline solids are in the form of:

Metals A
Ionic Compounds B
Ceramics C
Both (A) and (B) D
All of these E

Question # 10

Polymers are the chemical combination of carbon with:

Nitrogen A
Oxygen B
Hydrogen C
All of these D
None of these E

Question # 11

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

tiny regions A
domains B
vectors C
none of them D

Question # 12

When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called

p-type semi-conductor A
n-type semi-conductor B
either of them C
none of them D

Question # 13

Which of the following can become a good permanent magnet

iron A
steel B
both of them C
none of them D

Question # 14

The word amorphous means:

Without any structure A
With definite structure B
Regular arrangement of molecules C
Both (B) and (C) D
None of these E

Question # 15

The critical temperature of mercury is

1.18 K A
4.2 K B
3.72 K C
7.2 K D

Question # 16

In a semi-conductor material, current flows due to

positive charge A
negative charge B
both of them C
none of them D

Question # 17

The ratio of shearing stress/shearing strain is called as

Modulus A
Pascal modulus B
Hooker's modulus C
Shear modulus D

Question # 18

Examples of polymeric substances are:

Plastic A
Synthetic rubbers B
Zirconia C
All of these D
Both (A) and (B) E

Question # 19

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

amorphous solids A
polymeric solids B
crystalline solids C
all of them D

Question # 20

The size of the domain is such that they can contain

10²to 10⁴atoms A
10⁴ to 10⁸atoms B
10⁸to 10¹²atoms C
10¹²to 10¹⁶atoms D

Question # 21

The magnetism produced by electrons within an atom can arise from

electrons orbiting the nucleus A
electrons posses a spin B
both motions C
none of these motions D

Question # 22

Amorphous solids are also called as

crystalline solids A
polymeric solids B
glassy solids C
any one of them D

Question # 23

The whole structure obtained by the repetition of unit cells is called:

Crystal lattice A
Amorphous solid B
Polymeric solid C
Polysterne D
None of these E

Question # 24

Glass and high carbon steel are the examples of

brittle substances A
ductile substances B
plastic substances C
elastic substances D

Question # 25

There is a regular arrangement of molecules in a

amorphous solids A
polymeric solids B
crystalline solids C
none of them D

Question # 26

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

hole is created A
an electron is created B
an electron-hole pair is generated C
all of them D

Question # 27

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

diamagnetic substances A
ferromagnetic substances B
paramagnetic substances C
all of them D

Question # 28

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

conductors A
insulators B
semi-conductors C
all of them D

Question # 29

Each atom in metal crystal:

Remains fixed A
Vibrates about a fixed point B
Moves randomly C
Rotates about center of a crystal D
None of these E

Question # 30

The units of modulus of elasticity are

Nm^-2 A
Nm B
ms^-1 C
Pascal D

Sr.#	Question	Answer
1	The molecules or ions in a crystalline solids are	A. static B. not static C. randomly moving D. all of them
2	In a semi-conductor material, current flows due to	A. positive charge B. negative charge C. both of them D. none of them
3	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
4	The substances which break just after the elastic limit is reached, are known as	A. brittle substances B. ductile substances C. plastic substances D. elastic substances
5	The first super conductor was discovered in	A. 1811 B. 1890 C. 1901 D. 1911
6	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
7	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
8	A semi-conductor in its extremely pure form is known as	A. extrinsic semi-conductor B. intrinsic semi-conductor C. either of them D. none of them
9	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
10	There is a regular arrangement of molecules in a	A. amorphous solids B. polymeric solids C. crystalline solids D. none of them

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ECAT Pre General Science Physics Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 17 Physics of Solids

ECAT Pre General Science Physics Chapter 17 Physics of Solids