O1 Solid State
The number of atoms pcr unit cclI of hody
centred cubc is:
Multiple Choice Quevtions (B) 2
(A) (D) 6
(C) 4
In bod centred cubic stnucturc, the space (Mar 20|
0ccupicd is about |Mar 13|
(A) (B) Theory Questions
(C) (D) 32 "%
impurity
To prepare n-type scmiconductor. the following 1.2 Types of solids
to be added to silicon should have thc Distinguish betwcen crystall1ne solids and
number of valence clectrons: |Mar 14|
amorphous solids. [Mar 13, 14, 17, 19|
(A) 2 (B)
(C) 4 (D) Define 'Anisotropy'. |Mar 17, 191
R2.
3 The major binding force in diamond is 1.3 Classification of crystalline solids
JOct 14]
(A) covalent bond 1. Classify the following molecular solids into
(B) ionic bond different types:
metallic bond i. HCI i CO,
(C)
coordinate covalent bond iii. Solid ice iv. SO:
(D)
(July 18|
4 p-type semi-conductors are made by mixing
silicon with impurities of 1.5 Cubic system
(Mar 15]
germanium (B) boron 1. A face centred cube (fcc) consists of how may
(A)
(D)
antimony atoms? Explain. (July 14}
(C) arsenic
OR
5. An ionic compound crystallises in FCC type Calculate the number of atoms in a unit cell ofa
structure with 'A` ions at the centre of cach face metal crystallising in face centred cubic
and 'B' ions occupying cormers of the cube. The structure. [July 17]
forrmula of compound is
[Mar 17| 1.6 Packing of particles in crystal lattice
(A) AB4 (B) AjB
1 What is the ratio of octahedral holes to the
(C) AB (D) AB;
number of anions in hexagonal closed packed
6 An ionic crystal lattice has limiting value of structure? [Mar 19)
radius ratio as 0.4)4 to 0.732; the co-ordination
number of its cation is
1.7 Packing efficiency
|July 17] 1. Predict the coordination number of Cs ion l
(A) 6 (B) 4
r.. =1.69 ¢and r = 1.81 ¢. |July16]
(C) 3 (D) 12
2
7
r
radius ratio of
Calculate the percentage efficiency of|Mar
packing
17]
An ionic crystal lattice has in case of simple cubic cell.
0.320, its coordination number is 3 Give the relation between radius of atom
|Mar 18| edge length in body centered cubic crystal. ()
(A) 3 (B) 4 (July19)
(C) 6 (D) 8 1.8 Crystal defects or
8
imperfections
Number of types of orthorhombic unit cell is 1. What are Schottky defect and Frenkel defect?
[July 18] JOct13|
(A) 7 (B) 3
(C) 4 2.
Explain impurity defect in stainless steels
(D)
70
2be cdm cdiagram. [Mar15
, SOsCDlogspot chapter 1: Solid State
What is Schottky delet? |July 19| Nohum rytall1ses as hoxly centred cube (hcc)
10 Magnetic properties of sollds and has dens1ty of 55 kg dm Calculale the
ateme radius of nohm
What is femomagnctism? Iton 26) is |iven Atone nass of nohum 9|
sinongly femomagnetie. Iplain IMar 16| IMar IS|
Silver rytall1ses n te facc centrcd cubic
Numerical
rystal) siruure The cdye length of the unit
cell is fond to he 40% 7 prm Calculate dens1ty
1.5 Cubie sy stem of the unit cell
|iven: Molar mass of slver is 10% g molI
1
A unit vcll of inon crystal has edge length |(Oet 15]
'SS pm and density 7.86 g Cm Find the
number of atoms per unit cell and type of the Silver crystall1ses in fuc structure If density of
eNNal lattice. silver is l0.51 g cm calculate the volume of
iiven: Molar mass of iron S6 g mol unit ccll. |Mar 16|
ANogadro's number N -6.022 ×10" mol '
|Oct 14|
Detem1ne the density of cesium chloride which
ervsiallizcs in bec type structure with the cdge
length 412.lpm. The atomic masses of Cs and
(lare 133 and 35.5 respectively. |July 16]
Ametal crystalliscs into two cubic faces namely
facc centrcd (fcc) and body centred (bcc), whose
unit cell cdge lengths are 3.5 A and 3.0 ¢
respectivcly. Find the ratio of the dcnsities of
fcc and bcc. |July 17|
4 The density of iron crystal is 8.54 g cm'. 1f the
cdgc length of unit cell is 2.8 A and atomic
mass is S6 g mol. find the number of atoms in
the unit cell.
|Given: Avogadro's number = 6.022 x 10,
IA - | 10 cm] |Mar 18]
The density of silver having atomic mass 107.8
g mol is 10.8 g cm If the cdge length of
cubic unit cell is 4.05 10 cm, find the
number of silver atoms in the unit cell.
|N, 6.022 10, IÀ- 10 "cm] |July 18]
Unit cell of a metal has edge length of 2%% pm
and density of 7.86 g cm'. Determine the lype
o crystal lattice. |Alomic mass of melal
S6g mol'] |Mar 20|
1.1 Packing efficiency
old oceurs as face centred cube and hus i
density of 19.30 kg dm. Caleulate utomic
radius of gold. (Molar mass of Au - 197]
|Mur I3)
Facc centred cubie crystal lattice of copper hus
density of 8.966 e em Caleulate the volume of
the unit ccll.
(Given: Molar mass of copper is 63.5 g mol
nd Avogadro numbcr Ns is 6.022×10 mol 'J cCAREERSCIENCE
(Mar 14|
The number of atoms pcr unit cclI of hody
centred cubc is:
Multiple Choice Quevtions (B) 2
(A) (D) 6
(C) 4
In bod centred cubic stnucturc, the space (Mar 20|
0ccupicd is about |Mar 13|
(A) (B) Theory Questions
(C) (D) 32 "%
impurity
To prepare n-type scmiconductor. the following 1.2 Types of solids
to be added to silicon should have thc Distinguish betwcen crystall1ne solids and
number of valence clectrons: |Mar 14|
amorphous solids. [Mar 13, 14, 17, 19|
(A) 2 (B)
(C) 4 (D) Define 'Anisotropy'. |Mar 17, 191
R2.
3 The major binding force in diamond is 1.3 Classification of crystalline solids
JOct 14]
(A) covalent bond 1. Classify the following molecular solids into
(B) ionic bond different types:
metallic bond i. HCI i CO,
(C)
coordinate covalent bond iii. Solid ice iv. SO:
(D)
(July 18|
4 p-type semi-conductors are made by mixing
silicon with impurities of 1.5 Cubic system
(Mar 15]
germanium (B) boron 1. A face centred cube (fcc) consists of how may
(A)
(D)
antimony atoms? Explain. (July 14}
(C) arsenic
OR
5. An ionic compound crystallises in FCC type Calculate the number of atoms in a unit cell ofa
structure with 'A` ions at the centre of cach face metal crystallising in face centred cubic
and 'B' ions occupying cormers of the cube. The structure. [July 17]
forrmula of compound is
[Mar 17| 1.6 Packing of particles in crystal lattice
(A) AB4 (B) AjB
1 What is the ratio of octahedral holes to the
(C) AB (D) AB;
number of anions in hexagonal closed packed
6 An ionic crystal lattice has limiting value of structure? [Mar 19)
radius ratio as 0.4)4 to 0.732; the co-ordination
number of its cation is
1.7 Packing efficiency
|July 17] 1. Predict the coordination number of Cs ion l
(A) 6 (B) 4
r.. =1.69 ¢and r = 1.81 ¢. |July16]
(C) 3 (D) 12
2
7
r
radius ratio of
Calculate the percentage efficiency of|Mar
packing
17]
An ionic crystal lattice has in case of simple cubic cell.
0.320, its coordination number is 3 Give the relation between radius of atom
|Mar 18| edge length in body centered cubic crystal. ()
(A) 3 (B) 4 (July19)
(C) 6 (D) 8 1.8 Crystal defects or
8
imperfections
Number of types of orthorhombic unit cell is 1. What are Schottky defect and Frenkel defect?
[July 18] JOct13|
(A) 7 (B) 3
(C) 4 2.
Explain impurity defect in stainless steels
(D)
70
2be cdm cdiagram. [Mar15
, SOsCDlogspot chapter 1: Solid State
What is Schottky delet? |July 19| Nohum rytall1ses as hoxly centred cube (hcc)
10 Magnetic properties of sollds and has dens1ty of 55 kg dm Calculale the
ateme radius of nohm
What is femomagnctism? Iton 26) is |iven Atone nass of nohum 9|
sinongly femomagnetie. Iplain IMar 16| IMar IS|
Silver rytall1ses n te facc centrcd cubic
Numerical
rystal) siruure The cdye length of the unit
cell is fond to he 40% 7 prm Calculate dens1ty
1.5 Cubie sy stem of the unit cell
|iven: Molar mass of slver is 10% g molI
1
A unit vcll of inon crystal has edge length |(Oet 15]
'SS pm and density 7.86 g Cm Find the
number of atoms per unit cell and type of the Silver crystall1ses in fuc structure If density of
eNNal lattice. silver is l0.51 g cm calculate the volume of
iiven: Molar mass of iron S6 g mol unit ccll. |Mar 16|
ANogadro's number N -6.022 ×10" mol '
|Oct 14|
Detem1ne the density of cesium chloride which
ervsiallizcs in bec type structure with the cdge
length 412.lpm. The atomic masses of Cs and
(lare 133 and 35.5 respectively. |July 16]
Ametal crystalliscs into two cubic faces namely
facc centrcd (fcc) and body centred (bcc), whose
unit cell cdge lengths are 3.5 A and 3.0 ¢
respectivcly. Find the ratio of the dcnsities of
fcc and bcc. |July 17|
4 The density of iron crystal is 8.54 g cm'. 1f the
cdgc length of unit cell is 2.8 A and atomic
mass is S6 g mol. find the number of atoms in
the unit cell.
|Given: Avogadro's number = 6.022 x 10,
IA - | 10 cm] |Mar 18]
The density of silver having atomic mass 107.8
g mol is 10.8 g cm If the cdge length of
cubic unit cell is 4.05 10 cm, find the
number of silver atoms in the unit cell.
|N, 6.022 10, IÀ- 10 "cm] |July 18]
Unit cell of a metal has edge length of 2%% pm
and density of 7.86 g cm'. Determine the lype
o crystal lattice. |Alomic mass of melal
S6g mol'] |Mar 20|
1.1 Packing efficiency
old oceurs as face centred cube and hus i
density of 19.30 kg dm. Caleulate utomic
radius of gold. (Molar mass of Au - 197]
|Mur I3)
Facc centred cubie crystal lattice of copper hus
density of 8.966 e em Caleulate the volume of
the unit ccll.
(Given: Molar mass of copper is 63.5 g mol
nd Avogadro numbcr Ns is 6.022×10 mol 'J cCAREERSCIENCE
(Mar 14|
