MDCAT Physics Chapter 13 Deformation of Solids MCQ's Test With Answers

MDCAT Physics Chapter 13 Deformation of Solids MCQ's Test

Sr. # Questions Answers Choice
1 When a silicon crystal is doped with trivalent impurity which are  Indium  Arsenic  Phosphorous  None of these 
2 When a silicon crystal is doped with pentavalent impurity which are Boron Antimony  Gallium None of these
3 The each atom of pure Ge or Si shares neighboring electrons are Three Four Five None of these
4 Doping is the process in which the small amount of impurity is added into pure semiconductor lattice in the ratio 1 to 10<sup>3</sup> 1 to 10<sup>4</sup> 1 to 10<sup>5</sup> 1 to 10<sup>6</sup>
5 The electrical behavior of semiconductor depends on the material purity which is Sensitive Extremely sensitive&nbsp; Non-sensitive&nbsp; None of these
6 A semiconductor in its extremely pure form in known as Extrinsic semiconductor Intrinsic semiconductor Both a and b None of these
7 Semiconductors, like Ge or Si at room temperature becomes a Semiconductor Conductor Insulator None of these
8 The valency of electron in the valence band is known as Atom Molecule Hole None of these
9 At 0 K a piece of Ge and Si is a perfect Conductor Insulator Semiconductor None of these
10 In semiconductors at 0 K the valence band is Completely filled Partially filled&nbsp; No Yes
11 In semiconductors, at 0 K, the electrons in conduction band is Partially filled No Yes None of these
12 The energy gap between conduction band and valence band is semiconductor is A very narrow forbidden energy gap A narrow forbidden gap Of the order of 1 eV a and b
13 In semiconductors, the valence band at room temperature is Completely filled Partially filled Empty None of these
14 In terms of energy bands, semiconductors are those materials which at room temperature have conduction band Partially filled Full filled Slightly filled None of these
15 Is there any physical distinction between the valence and conduction band Yes No Very small None of these
16 In conductors, the valence band and conduction bands are Touch each other Overlapped each other Largely overlapped None of these
17 Conductors are those materials in which the free electrons Very large Very small Plenty of&nbsp; None of these
18 The energy gap is insulators becomes very large and has the value Few electron volt (eV) Some electron volt (eV) Several electron volt (eV) None of these
19 In Insulators the conduction band is Empty Partially filled Full None of these
20 Insulators are those materials in which valence band is Empty Partially filled Full None of these
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