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

Match List - I with List - II: List-I (Property) List-II (Example) (a) Diamagnetism (i) MnO (b) Ferrimagnetism (ii) O 2 (c) Paramagnetism (iii) NaCl (d) Antiferromagnetism (iv) Fe 3 O 4 Choose the most appropriate answer from the options given below:

( a ) - ( iii ) , ( b ) - ( iv ) , ( c ) - ( ii ) , ( d ) - ( i )

( a ) - ( iv ) , ( b ) - ( ii ) , ( c ) - ( i ) , ( d ) - ( iii )

( a ) - ( ii ) , ( b ) - ( i ) , ( c ) - ( iii ) , ( d ) - ( iv )

( a ) - ( i ) , ( b ) - ( iii ) , ( c ) - ( iv ) , ( d ) - ( ii )

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To get an n-type semiconductor from silicon, it should be doped with a substance with valency:

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Important Questions on The Solid State

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

‘

X

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

X

is:

HARD

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

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>The Solid State>Electrical Properties of Solids

The one that is extensively used as a piezoelectric material is:

MEDIUM

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

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

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

Silicon doped with Arsenic is

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

To get

n

-type semiconductors, impurity to be added to silicon should have the following number of valence electrons.

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

Which of the following arrangements shows the schematic alignment of magnetic moments of antiferromagnetic substance?

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

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

MEDIUM

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

Which one of the following species responds to an external magnetic field?

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

A common observation seen in

{Fe}_{3} O_{4}

is that it is ferrimagnetic at room temperature but at

850 K

it becomes

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

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

Ge doped with In.

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

Silicon doped with gallium forms

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Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

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>The Solid State>Electrical Properties of Solids

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>The Solid State>Electrical Properties of Solids

Explain the following :

Doping

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

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

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

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

MEDIUM

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

Match List - I with List - II:

List-I (Property)		List-II (Example)
(a)	Diamagnetism	(i)	$MnO$
(b)	Ferrimagnetism	(ii)	$O_{2}$
(c)	Paramagnetism	(iii)	$NaCl$
(d)	Antiferromagnetism	(iv)	${Fe}_{3} O_{4}$

Choose the most appropriate answer from the options given below:

MEDIUM

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

Which of the following oxides shows electrical properties like metals?

EASY

Chemistry>Physical Chemistry>The Solid State>Electrical Properties of Solids

Find the non-semiconductor element among the following.

To get an n-type semiconductor from silicon, it should be doped with a substance with valency:

Important Questions on The Solid State

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