ECAT Pre Computer Science Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 17 Physics of Solids

Try The 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

The SI unit of strain is

Question # 2

The units of modulus of elasticity are

Question # 3

The ability of the body to return to its original shape is called

Question # 4

Amorphous solids are also called as

Question # 5

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

Question # 6

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

Question # 7

Each atom in metal crystal:

Question # 8

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

Question # 9

An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:

Question # 10

A unit cell is smallest basic structure which is:

Question # 11

The valence band of an atom in a solid

Question # 12

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

Question # 13

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

Question # 14

The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are

Question # 15

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

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ECAT Physics Chapter 17 Important MCQ's

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 A structure of polymeric solid is:
A. An ordered structure
B. A disordered structure
C. Intermediate between order and disorder
D. Any of these
3 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
4 Which of the following theory completely explain the three types of materials
A. Bohr model of electron distribution
B. Rutherford atomic model
C. Pauli's exclusion principle
D. energy band theory
5 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
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 transition from solid to liquid is actually from:
A. Order to disorder
B. Disorder to order
C. Order to order
D. Disorder to disorder
8 In a soft iron, domains are
A. easily oriented along external field and do not return to original random positions
B. easily oriented along external field and readily returns to originally random position
C. do no oriented along external field and also do not returns to originally random position
D. none of them
9 The results of mechanical tests are usually expressed in terms of
A. stress
B. strain
C. stress and strain
D. neither strees nor strain
10 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

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