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

Under the elastic region, the deformation produced in the material, the deformation produced in the material will be

Question # 2

The smallest three dimensional basic structure in a crystalline solid is called

Question # 3

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

Question # 4

In a cubic crystal, All solids meet at:

Question # 5

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

Question # 6

Amorphous solids are also called as

Question # 7

The ratio of shearing stress/shearing strain is called as

Question # 8

The pattern of NaCl particles have a shape which is :

Question # 9

The modulus of elasticity can be written as

Question # 10

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

Question # 11

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

Question # 12

Polymeric solids have

Question # 13

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

Question # 14

Which of the following can become a good permanent magnet

Question # 15

A structure of polymeric solid is:

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ECAT Physics Chapter 17 Important MCQ's

Sr.# Question Answer
1 When a large number of atoms are brought close to one another to form a solid, each energy level of an isolated atom splits into sub-levels, called
A. energy bands
B. energy shells
C. states
D. all of them
2 A unit cell is smallest basic structure which is:
A. One dimensional
B. Two dimensional
C. Three dimensional
D. Four dimensional
3 The greatest stress that a material can endure without losing the proportionality between stress and strain is called
A. plastic line
B. breaking point
C. proportional limit
D. none of them
4 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
5 The magnetism produced by electrons within an atom can arise from
A. electrons orbiting the nucleus
B. electrons posses a spin
C. both motions
D. none of these motions
6 The molecules or ions in a crystalline solids are
A. static
B. not static
C. randomly moving
D. all of them
7 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
8 On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost
A. 600°C
B. 7600°C
C. 800°C
D. 900°C
9 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
10 The curie temperature of iron is about
A. 250°C
B. 500°C
C. 750°C
D. 1000°C

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