ECAT Pre Computer Science Chapter 17 MCQ Test With Answer

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

In a cubic crystal, All solids meet at:

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

Question # 4

Above the curie temperature, iron becomes

Question # 5

The critical temperature of tin is

Question # 6

Lead, copper and wrought iron are examples of

Question # 7

Every crystalline solid has

Question # 8

When a stress changes length, it is called the

Question # 9

The SI unit of strain is

Question # 10

A unit cell is smallest basic structure which is:

Question # 11

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

Question # 12

Tick the one which is not polymer solid:

Question # 13

The arrangement or molecules or atoms in a crystalline solid can be studied by using:

Question # 14

The pattern of crystalline solid is:

Question # 15

Polymeric solids have

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 The maximum stress that a material can withstand, is known as
A. plastic point
B. elastic limit
C. yield point
D. ultimate tensile strength
2 The word amorphous means:
A. Without any structure
B. With definite structure
C. Regular arrangement of molecules
D. Both (B) and (C)
3 The units of modulus of elasticity are
A. Nm-2
B. Nm
C. ms-1
D. Pascal
4 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
5 A unit cell is smallest basic structure which is:
A. One dimensional
B. Two dimensional
C. Three dimensional
D. Four dimensional
6 The SI unit of stress is
A. N/m2
B. Nmc
C. dynes/m
D. N
7 Amorphous solids are also more like
A. crystalline solids
B. gases
C. liquids
D. any one of them
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 Recently a complex crystalline structure known as Yetrium Barium Copper Oxide have been reported to become superconductor at
A. 125 K
B. 25 K
C. 263 K
D. 163 K
10 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

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