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 soft iron, domains are

Question # 2

The materials in which there are plenty of free electrons for electrical conduction are known as

Question # 3

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

Question # 4

A structure of polymeric solid is:

Question # 5

Polymeric solids have

Question # 6

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

Question # 7

Tick the one which is not polymer solid:

Question # 8

When a stress changes the shape, it is called the

Question # 9

The smallest three dimensional basic structure is called as:

Question # 10

The amplitude of oscillation of each atom in a metallic crystal rises with the

Question # 11

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

Question # 12

The valence band of an atom in a solid

Question # 13

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

Question # 14

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

Question # 15

In a semi-conductor material, current flows due to

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 When a stress changes length, it is called the
A. compressional stress
B. tensile stress
C. shear stress
D. any one of them
2 Examples of polymeric substances are:
A. Plastic
B. Synthetic rubbers
C. Zirconia
D. All of these
3 The amplitude of oscillation of each atom in a metallic crystal rises with the
A. rise in temperature
B. decrease in temperature
C. even temperature remains constant
D. all of them
4 In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as
A. plastic limit
B. plastic deformation
C. proportional limit
D. elastic behaviour
5 The electrons occupying the conduction band are known as
A. conduction electrons
B. free electrons
C. both of them
D. none of them
6 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
7 Electrons of an isolated atom are bound to the nucleus, and
A. can only have distinct energy level
B. can only have same energy level
C. may or may not have distinct energy levels
D. none of these
8 Within each domain, the magnetic field of all the spinning electrons are
A. parallel
B. antiparallel
C. perpendicular
D. all of them
9 The pattern of NaCl particles have a shape which is :
A. Cubic
B. Body centred cubic
C. Simple cubic
D. face centred
10 The measure of the deformation in a solid when stress is applied to its is called
A. elastic constant
B. young's modulus
C. strain
D. elasticity

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