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

Question # 1

Lead, copper and wrought iron are examples of

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

Question # 2

Arsenic, antimony and phosphorus are the elements from

third group A
fourth group B
fifth group C
none of them D

Question # 3

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 # 4

Semi-conductor elements have atoms with

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

Question # 5

There is a regular arrangement of molecules in a

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

Question # 6

In a soft iron, domains are

easily oriented along external field and do not return to original random positions A
easily oriented along external field and readily returns to originally random position B
do no oriented along external field and also do not returns to originally random position C
none of them D

Question # 7

The domains are of macroscopic size of the order of

centimeters A
meters B
millimeters C
nanomneters D

Question # 8

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 # 9

The crystalline structure of NaCI is

rectangular A
hexagonal B
tetrahedral C
cubical D

Question # 10

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 # 11

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 # 12

Zirconia is classified as:

Ceramic solid A
Ionic compound B
Metal C
Either (A) or (B) D
Either (B) or (C) E

Question # 13

In a cubic crystal, All solids meet at:

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

Question # 14

In the phenomenon of hysteresis

magnetism leads the magnetising current A
magnetism lags behind the magnetising current B
meganetism goes along the magnetising current C
none of them D

Question # 15

Glass and high carbon steel are the examples of

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

Question # 16

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 # 17

The first super conductor was discovered in

1811 A
1890 B
1901 C
1911 D

Question # 18

The critical temperature of tin is

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

Question # 19

Which of the following theory completely explain the three types of materials

Bohr model of electron distribution A
Rutherford atomic model B
Pauli's exclusion principle C
energy band theory D

Question # 20

The conduction band in a solid

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

Question # 21

The greatest stress that a material can endure without losing the proportionality between stress and strain is called

plastic line A
breaking point B
proportional limit C
none of them D

Question # 22

The measure of the deformation in a solid when stress is applied to its is called

elastic constant A
young's modulus B
strain C
elasticity D

Question # 23

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 # 24

Amorphous solids are also more like

crystalline solids A
gases B
liquids C
any one of them D

Question # 25

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

1 to 10 A
1 to 10³ B
1 to 10⁶ C
1 to 10⁹ D

Question # 26

Above the curie temperature, iron becomes

ferromagnetic A
paramagnetic B
diamagnetic C
any one of them D

Question # 27

Which of the following can become a good temporarily magnet

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

Question # 28

Synthetic materials fall into the category of

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

Question # 29

The SI unit of strain is

N A
Dynes B
Pascal C
Dimensionless D

Question # 30

Polymeric solids have

low specific gravity A
high specific gravity B
either of them C
none of them D

Sr.#	Question	Answer
1	The doped semi-conductor materials are known as	A. intrinsic semi-conductor B. extrinsic semi-conductor C. either of them D. none of them
2	Zirconia is classified as:	A. Ceramic solid B. Ionic compound C. Metal D. Either (A) or (B)
3	The critical temperature of tin is	A. 1.18 K B. 4.2 K C. 3.72 K D. 7.2 K
4	The arrangement or molecules or atoms in a crystalline solid can be studied by using:	A. Chemical methods B. Neutrons C. X-ray techniques D. Copper atoms
5	Which of the following can become a good permanent magnet	A. iron B. steel C. both of them D. none of them
6	Every crystalline solid has	A. definite melting point B. different melting points C. may or may not be definite D. none of them
7	In a semi-conductor material, the total current is	A. only the +ve current B. only the electronic current C. sum of +ve and electronic current D. all of them
8	Whenever a covalent bond is broken in an intrinsic semi-conductor	A. hole is created B. an electron is created C. an electron-hole pair is generated D. all of them
9	Lead, copper and wrought iron are examples of	A. brittle substances B. ductile substances C. plastic substances D. elastic substances
10	The curie temperature of iron is about	A. 250°C B. 500°C C. 750°C D. 1000°C

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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