Match the following: i Ge doped with In 1 . n-type semiconductor ii Si doped with N 2 . Schottky defect iii ZnS 3 . p-type semiconductor iv CsCl 4 . Frenkel defect

i − 3 , ii − 1 , iii − 4 , iv − 2

i − 1 , ii − 3 , iii − 2 , iv − 4

i − 1 , ii − 3 , iii − 4 , iv − 2

i − 3 , ii − 1 , iii − 2 , iv − 4

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Pure substances which show conductivity similar to that of silicon and germanium are called conductors.

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Important Questions on Solid State

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Explain the following :

Doping

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

What are semiconductors? How electrical conductivity semiconductors vary with temperature? Give one example of intrinsic semiconductor.

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Define semiconductor. Classify each of the following as being either a p-type or an n-type semiconductor :

B doped with Si.

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

What are meant by n-type and p-type semiconductors? Write their uses.

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Silicon doped with Arsenic is

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Which type of semiconductor is formed when Arsenic is doped with Germanium?

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Define semiconductor. Classify each of the following as being either a p-type or an n-type semiconductor :

Ge doped with In.

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Classify the following as being either a $p$ -type or $n$ -type semiconductor.

$Si$ doped with $As$

HARD

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Match the following:

$i$	$Ge$ doped with $In$	$1 .$	n-type semiconductor
$ii$	$Si$ doped with $N$	$2 .$	Schottky defect
$iii$	$ZnS$	$3 .$	p-type semiconductor
$iv$	$CsCl$	$4 .$	Frenkel defect

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

To get p-type semiconductor, impurity to be added to silicon should have which of the following numbers of valence electrons?

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

‘

X

’ melts at low temperature and is a bad conductor of electricity in both liquid and solid state.

X

is:

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Silicon doped with gallium forms

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

How does doping increase the conductivity of semiconductors? Explain.

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Give reason: Electrical conductivity of silicon increases with increase in temperature.

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

What is a semiconductor? What are

n

-type and

p

-type semiconductors?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Copper shows electrical conductance in solid as well as molten state whereas copper chloride shows electrical conductance only in molten state. Give reason.

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Classify the following as being either a $p$ -type or $n$ -type semiconductor.

$Ge$ doped with $B$

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Chemistry>Physical Chemistry>Solid State>Electrical Properties

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