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 )

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

EASY

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Which of the following covalent solid is the conductor of electricity?

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Important Questions on Solid State

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

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

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

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:

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

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

HARD

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Consider an ionic solid

MX

, with

NaCl

structure. Construct a new structure

(Z)

, whose unit cell is constructed from the unit cell of

MX

, following the sequential instructions given below. Neglect the charge balance.

(i)

Remove all the anions

(X)

, except the central one.

(ii)

Replace all the face centered cations

(M)

, by anions

(X)

(iii)

Remove all the corner cations

(M)

(iv)

Replace the central anion

(X)

, with cation

(M)

.

The value of

(\frac{n u m b e r o f a n i o n s}{n u m b e r o f c a t i o n s})

Z

is _____.

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Which of the following oxides shows electrical properties like metals?

HARD

Chemistry>Physical Chemistry>Solid State>Electrical Properties

The electronic band of a solid is partially filled. This solid is

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

The barrier potential of a p-n junction depends on:

(a)

type of semi-conductor material

(b)

amount of doping

(c)

temperature
Which one of the following is correct?

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Silicon doped with Arsenic is

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Chemistry>Physical Chemistry>Solid State>Electrical Properties

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

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion

(C a^{2 +})

and fluoride ion

(F^{-})

are

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

Find the non-semiconductor element among the following.

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

A unit cell of calcium fluoride has four calcium ions. The number of fluoride ions in the unit cell is

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.

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Chemistry>Physical Chemistry>Solid State>Electrical Properties

The radius of

K^{+}

133 pm

and that of

{Cl}^{-}

181 pm

. The volume of the unit cell of

KCl

expressed in

10^{- 22} {cm}^{3}

is:

HARD

Chemistry>Physical Chemistry>Solid State>Electrical Properties

The cubic unit cell structure of a compound containing cation $M$ and anion $X$ is shown below. When compared to the anion, the cation has smaller ionic radius. Choose the correct statement(s).

Question Image

MEDIUM

Chemistry>Physical Chemistry>Solid State>Electrical Properties

The contribution to the total current in a semiconductor, due to electrons and holes are

0.75

and

0.25

respectively. The drift velocity of electrons is

\frac{3}{2}

times that of holes at this temperature. Then the ratio between electron concentration and hole concentration is

EASY

Chemistry>Physical Chemistry>Solid State>Electrical Properties

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>Solid State>Electrical Properties

Silicon doped with gallium forms

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:

Which of the following covalent solid is the conductor of electricity?

Important Questions on Solid State

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