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

MEDIUM

Earn 100

Explain the following with suitable examples:

$12$ - $16$ and $13$ - $15$ group compounds

Important Questions on The Solid State

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

MEDIUM

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

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

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:

EASY

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

In an unbiased p - n junction electrons diffuse from n-region to p-region because:

EASY

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

Silicon doped with gallium forms

MEDIUM

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

In a

p - n

junction diode, change in temperature due to heating

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

In the following circuit diagram, the current through the battery is

Question Image

EASY

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

Find the non-semiconductor element among the following.

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

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>The Solid State>Electrical Properties of Solids

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

MEDIUM

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

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>The Solid State>Electrical Properties of Solids

The majority charge carries in a

N -

type semiconductor are _____.

EASY

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

An intrinsic semiconductor is converted into

n

-type extrinsic semiconductor by doping it with:-

MEDIUM

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

The density of an electron-hole pair in pure germanium is

3 \times 10^{16} m^{- 3}

at room temperature. On doping with aluminium, the hole density increases to

4.5 \times 10^{22} m^{- 3}

. Now the electron density (in

m^{- 3}

) in doped germanium will be

EASY

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

A donor impurity results in

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

‘

X

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

X

is:

EASY

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

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