ECAT Pre Engineering Physics Chapter 17 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 17 Physics of Solid

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Physics ECAT Pre Engineering Chapter 17 Physics of Solid

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Question # 1

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

Question # 2

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

Question # 3

The valence band of an atom in a solid

Question # 4

The neighbours of every molecule in crystalline solids are arranged in

Question # 5

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

Question # 6

The word amorphous means:

Question # 7

The modulus of elasticity can be written as

Question # 8

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

Question # 9

In a semi-conductor material, current flows due to

Question # 10

The molecules or ions in a crystalline solids are

Question # 11

The pattern of NaCl particles have a shape which is :

Question # 12

Polymers are the chemical combination of carbon with:

Question # 13

The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called

Question # 14

Any superconductor with critical temperature above 77 K, is referred as

Question # 15

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

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called
A. tiny regions
B. domains
C. vectors
D. none of them
2 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
3 Examples of polymeric substances are:
A. Plastic
B. Synthetic rubbers
C. Zirconia
D. All of these
4 In a cubic crystal, All solids meet at:
A. 60o
B. 90o
C. 109o
D. 30o
5 The results of mechanical tests are usually expressed in terms of
A. stress
B. strain
C. stress and strain
D. neither strees nor strain
6 When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called
A. p-type semi-conductor
B. n-type semi-conductor
C. either of them
D. none of them
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 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
9 Amorphous solids are also called as
A. crystalline solids
B. polymeric solids
C. glassy solids
D. any one of them
10 The materials in which there are plenty of free electrons for electrical conduction are known as
A. conductors
B. insulators
C. semi-conductors
D. all of them

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  • farooq,khan

    farooq,khan

    17 Oct 2018

    when,stress,apply,change,in,length,called,tensil,stress

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