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

Question # 1

The neighbours of every molecule in crystalline solids are arranged in

an irregular manner A
a regular manner B
any manner C
none of them D

Question # 2

The results of mechanical tests are usually expressed in terms of

stress A
strain B
stress and strain C
neither strees nor strain D

Question # 3

The pattern of crystalline solid is:

One dimesional A
Two dimensional B
Three dimensional C
None of these D
Either (A) or (B) E

Question # 4

When relatively simple molecules are chemically combined into massive molecules, the reaction is called:

Fission reaction A
Fusion reaction B
Polymerization C
Any of these D
None of these E

Question # 5

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 # 6

The first super conductor was discovered in

1811 A
1890 B
1901 C
1911 D

Question # 7

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 # 8

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 # 9

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

short range order A
long range order B
both of them C
none of them D

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

Which of the following can become a good permanent magnet

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

Question # 12

Tick the one which is not polymer solid:

Zirconia A
Polythene B
Nylon C
Synthetic rubber D
None of these E

Question # 13

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

plastic limit A
plastic deformation B
proportional limit C
elastic behaviour D

Question # 14

The critical temperature of mercury is

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

Question # 15

Semi-conductor elements have atoms with

2 valence electrons A
3 valence electrons B
4 valence electrons C
5 valence electrons D

Question # 16

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 # 17

In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:

Adhesive force A
Nuclear forces B
Inter atomic cohesive force C
Electromagnetic force D
None of these E

Question # 18

The charged nucleus of an atom itself spins its magnetic field

equal to the field produced by orbital electrons A
greater than the field produced by orbital electrons B
much weaker than the field produced by orbital electrons C
none of these D

Question # 19

A semi-conductor in its extremely pure form is known as

extrinsic semi-conductor A
intrinsic semi-conductor B
either of them C
none of them D

Question # 20

An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as

magnetic A
magnetic dipole B
magnetic monopole C
none of them D

Question # 21

Glass is an example of

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

Question # 22

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

energy bands A
energy shells B
states C
all of them D

Question # 23

The transition from solid to liquid is actually from:

Order to disorder A
Disorder to order B
Order to order C
Disorder to disorder D
None of these E

Question # 24

When small number of atoms from some other suitable element is added to the semi-conductor material, then this process is known as

impurification A
adding B
doping C
extrinsivity D

Question # 25

Glass and high carbon steel are the examples of

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

Question # 26

The bonding between the semi-conductor materials is

covalent A
ionic B
either of them C
none of them D

Question # 27

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

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

Question # 28

Each atom in a metal crystal vibrates about a fixed point with an amplitude that:

Decrease the rise in temprature A
Is not affected by rise in temprature B
Increase with rise in temprature C
Both (B) and (C) D
None of these E

Question # 29

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 # 30

The band above the valence band is called

high energy band A
conduction band B
empty band C
none of them D

Sr.#	Question	Answer
1	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
2	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
3	In the phenomenon of hysteresis	A. magnetism leads the magnetising current B. magnetism lags behind the magnetising current C. meganetism goes along the magnetising current D. none of them
4	In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:	A. Adhesive force B. Nuclear forces C. Inter atomic cohesive force D. Electromagnetic force
5	The neighbours of every molecule in crystalline solids are arranged in	A. an irregular manner B. a regular manner C. any manner D. none of them
6	The critical temperature of tin is	A. 1.18 K B. 4.2 K C. 3.72 K D. 7.2 K
7	The force which maintain the strict long-range order between atoms of a crystalline solid is the:	A. Nuclear force B. Cohesive force C. Adhesive force D. Coulomb force
8	Any superconductor with critical temperature above 77 K, is referred as	A. low temperature superconductor B. high temperature superconductor C. very low temperature superconductor D. none of them
9	The bonding between the semi-conductor materials is	A. covalent B. ionic C. either of them D. none of them
10	Arsenic, antimony and phosphorus are the elements from	A. third group B. fourth group C. fifth group 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