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Solid State — NEET UG Chemistry PYQs

659 previous year questions from Solid State with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

659 questionsChemistrySolutions on every page
1

Which of the following formulae is used to find total volume of atoms present in face-centred cubic unit cell?

MHT CET Medical 2026 Solution View → 2

What is the packing efficiency of a metal crystal if it crystallizes in a face centered cubic lattice ?

MHT CET Medical 2026 Solution View → 3

What is the total number of tetrahedral voids present in a single fcc unit cell?

MHT CET Medical 2026 Solution View → 4

The unit cell of metal contains four particles. Calculate the volume of the unit cell if the molar mass of metal is 192 g mol ⁻¹ . [ N_A = 1.5 10²⁵ g cm ⁻³ mol ⁻¹ ]

MHT CET Medical 2026 Solution View → 5

A metal forms fcc unit cell with unit edge length 400 pm . Calculate the number of atoms present in 0.6 g of metal if the density of metal is 12.0 g/cm ^3

MHT CET Medical 2026 Solution View → 6

A compound is formed by two elements X and Y. The atoms of element Y form a hcp structure. The atoms of element X occupy 1/3 of octahedral voids. What is the formula of a compound?

MHT CET Medical 2026 Solution View → 7

An element has bcc structure with atomic radius 200 pm. Find the volume of unit cell.

MHT CET Medical 2026 Solution View → 8

Which of the following crystal system has four types of unit cells?

MHT CET Medical 2026 Solution View → 9

What is the packing efficiency and number of atoms per unit cell present in a face centered cubic system?

MHT CET Medical 2026 Solution View → 10

What is the packing efficiency in BCC unit cell ?

MHT CET Medical 2026 Solution View → 11

The volume of fcc unit cell is 5.6 10⁻²³ cm ^3 . Calculate the molar mass of metal if the density of metal is 20.4 g cm ⁻³ . [ N_A=6.022 10²³ ]

MHT CET Medical 2026 Solution View → 12

Which of the following crystals are the hardest and most incompressible of all materials.

MHT CET Medical 2026 Solution View → 13

In a compound, atoms of element Y form hexagonal close-packed structure. Atoms of element X occupy 2/3 of the octahedral voids. What is the formula of the compound?

MHT CET Medical 2026 Solution View → 14

The density of iridium is 22.4 g cm ⁻³ . The unit cell of iridium is fcc Calculate the volume of unit cell. if the molar mass of iridium is 192.2 g/mol.

MHT CET Medical 2026 Solution View → 15

Match List I with List II List I (Crystalline Solids) List II (Examples) (A). Ionic Solid (I). CO ₂ (B). Covalent Solid (II). K ₂ SO ₄ (C). Molecular Solid (III). K (D). Metallic S

MHT CET Medical 2026 Solution View → 16

Which of the following exhibits non-stoichiometric metal deficiency?

MHT CET Medical 2026 Solution View → 17

Which of the following defects exhibit colour to solid alkali metal halides?

MHT CET Medical 2026 Solution View → 18

What type of the following defect is produced when NaCl crystal is doped with MgCl ₂ ?

MHT CET Medical 2026 Solution View → 19

Sodium forms bcc structure. The molar mass of sodium is 23 g/mol. What is the mass of 3 unit cells of sodium?

MHT CET Medical 2026 Solution View → 20

Which of the following ionic crystals exhibits Schottky defect?

MHT CET Medical 2026 Solution View → 21

Which one of the following elements when doped with silicon makes it p-type semiconductor ?

MHT CET Medical 2026 Solution View → 22

A solid is formed of two different elements, A and B. In this atoms of A are arranged in the CCP array, and atoms of B occupy all octahedral voids and half of tetrahedral voids. Fi

MHT CET Medical 2026 Solution View → 23

Elements A and B combine to form the ionic compound A _x B _y . The anions of B are arranged in hcp array and the cations of A occupy all the octahedral voids. Determine the values

MHT CET Medical 2026 Solution View → 24

If the volume of fcc unit cell is 6.4 10⁻²³ cm ^3 find the radius of an atom in it.

MHT CET Medical 2026 Solution View → 25

What type of solid is the diamond?

MHT CET Medical 2026 Solution View → 26

Calculate the atomic radius of an element having edge length 3.61 10⁻⁸ cm for fcc structure.

MHT CET Medical 2026 Solution View → 27

If the edge length of a bcc unit cell is 300 pm . Calculate the body diagonal.

MHT CET Medical 2026 Solution View → 28

Which of the following information is given by XRD technique?

MHT CET Medical 2026 Solution View → 29

A metal crystallizes in FCC crystal lattice with density 10 g/cm ^3 . The edge length of unit cell is 100 pm. The number of unit cell present in 100 g of metal is-

MHT CET Medical 2026 Solution View → 30

The silicon doped with gallium forms

MHT CET Medical 2026 Solution View → 31

Which of the following crystal systems has the lowest number of Bravais lattices?

MHT CET Medical 2026 Solution View → 32

Identify from following crystal system that its unit cell possesess edge length a = b = c and angle between these axes = = = 90^ .

MHT CET Medical 2026 Solution View → 33

Potassium forms bcc unit cell structure with edge length of 522 pm. Find the radius of the potassium atom ?

MHT CET Medical 2026 Solution View → 34

How are edge length 'a' of the unit cell and radius ' r ' of the sphere related to each other in ccp structure? (Choose correct option for your answer.)

NEET 2023 Solution View → 35

A compound is formed by two elements A and B. The element B forms cubic close packed structure and atoms of A occupy 1 3 of tetrahedral voids. If the formula of the compound is A x

NEET 2023 Solution View → 36

What fraction of one edge centred octahedral void lies in one unit cell of fcc?

NEET 2023 Solution View → 37

How many number of tetrahedral voids are formed in 5 ~mol of a compound having cubic close packed structure? (Choose the correct option)

NEET 2023 Solution View → 38

Match List-I with List-II : array |c|c| array l List-I (Defects) array & array l array l List-II (Shown by) array array array l (a) Frenkel defect array & array l (i) non-ionic sol

NEET 2022 Solution View → 39

What fraction of Fe exists as Fe (III) in Fe _ 0.96 O ? (Consider Fe _ 0.96 to be made up of Fe (II) and Fe (III) only)

NEET 2022 Solution View → 40

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : In a particular point defect, an ionic solid is electrically ne

NEET 2022 Solution View → 41

Copper crystallizes in an FCC unit cell with cell edge of 3 .608 × 10 − 8   cm . The density of copper is 8 . 92   g / cm 3 , Calculate the atomic mass of cop

NEET 2022 Solution View → 42

Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:

NEET 2021 Solution View → 43

The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is:

NEET 2021 Solution View → 44

An element has a body centered cubic (bcc) structure with a cell edge of 288   pm . The atomic radius is

NEET 2020 Solution View → 45

Which one of the following compounds shows both, Frenkel as well as Schottky defects?

NEET 2020 Solution View → 46

The number of tetrahedral voids present in 0.5 mole of h c p crystal structure are

AIIMS 2019 Solution View → 47

In f c c , distance between the nearest tetrahedral voids is

AIIMS 2019 Solution View → 48

An element germanium crystallises in b c c type crystal structure with edge of unit cell equal to 288 pm and the density of the element equal to 7.2 ~g ~cm ⁻³ . The number of atoms

AIIMS 2019 Solution View → 49

Assertion: ZnO becomes yellow when it is heated. Reason : Metal excess defect arises due to excess of Zn ²⁺ ions which move to interstitial sites and the electron moves to neighbou

AIIMS 2019 Solution View → 50

Assertion : Ferromagnetic compound is more attracted towards magnetic field. Reason : Because all electrons are aligned in same direction.

AIIMS 2019 Solution View → 51

Formula of metal oxide with metal deficiency defect in its crystal is A_ 0.8 O . The crystal contains A²⁺ and A³⁺ ions. The fraction of metal existing as A²⁺ ions in the crystal is

AIIMS 2019 Solution View → 52

Which type of defect present in NaCl ?

JIPMER 2019 Solution View → 53

Silicon carbide is example of

JIPMER 2019 Solution View → 54

Frenkel defect is present in which of the following?

JIPMER 2019 Solution View → 55

A compound is formed by cation C and anion A . The anions form hexagonal close packed (hcp) lattice and the cations occupy 75 % of octahedral voids. The formula of the compound is:

NEET 2019 Solution View → 56

Formula of nickel oxide with metal deficiency defect in its crystal is Ni _ 0.98 O . The crystal contains Ni ²⁺ and Ni ³⁺ ions. The fraction of nickel existing as Ni ²⁺ ions in the

NEET 2019 Solution View → 57

Assertion : Metal deficiency defect can be seen in FeO . Reason : Li compound ( LiCl ) has pink colour due to F-center.

AIIMS 2018 Solution View → 58

What colour is observed when ZnO is heated?

AIIMS 2018 Solution View → 59

In HCP of A, 1 3 of tetrahedral voids are occupied by B . What is the formula of the compound?

AIIMS 2018 Solution View → 60

Assertion : Due to Frenkel defect, there is no effect on the density of the crystalline solid. Reason : In Frenkel defect, no cation or anion leaves the crystal.

AIIMS 2018 Solution View → 61

In a crystalline solid, having formula XY ₂ O ₄ , oxide ions are arranged in cubic close packed lattice while, cations X are present is tetrahedral voids and cations Y are present

JIPMER 2018 Solution View → 62

An atom forms face centred cubic crystal with density d =8.92 ~g / mL and edge length a =3.6 10⁻⁸ ~cm . The molecular mass of atom in amu is

JIPMER 2018 Solution View → 63

Iron exhibits BCC structure at room temperature. Above 900 ° C , it transforms to FCC structure. The ratio of the density of iron at room temperature to that at 900 ° C i

NEET 2018 Solution View → 64

ZnO is white when cold and yellow when heated. It is due to the development of

AIIMS 2017 Solution View → 65

Assertion: The number of tetrahedral voids is double the number of octahedral voids. Reason: The size of the tetrahedral voids is half of that of the octahedral void.

AIIMS 2017 Solution View → 66

A solid A B has NaCl structure. If the radius of cation A⁺ is 170 pm , then the maximum possible radius of the anion B⁻ is

JIPMER 2017 Solution View → 67

A cubic unit cell of a metal with molar mass of 63.55 ~g ~mol ⁻¹ has an edge length of 362 pm . Its density is 8.92 ~g ~cm ⁻³ . The type of unit cell is

JIPMER 2017 Solution View → 68

Which is the incorrect statement?

NEET 2017 Solution View → 69

If an atom crystallises in b c c lattice with r=4 Å then the edge length will be

AIIMS 2016 Solution View → 70

If oxide ions are arranged in hcp and the aluminium ions occupy two thirds of octahedral voids. What will be the formula of the compound?

JIPMER 2016 Solution View → 71

In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion C a 2 + and fluoride ion F - are

NEET 2016 Solution View → 72

Lithium has a bcc structure. Its density is 530   k g   m - 3 and its atomic mass is 6.94   g   m o l - 1 . Calculated the edge length of a unit cell of Lithium

NEET 2016 Solution View → 73

The ionic radii of A + and B - ions are 0.98 × 10 - 10 m and 1.81 × 10 - 10   m . The coordination number of each ion in AB is

NEET 2016 Solution View → 74

The yellow colour in NaCl crystals is due to

AIIMS 2015 Solution View → 75

Which of the following is an amorphous solid?

AIIMS 2015 Solution View → 76

The Ca ²⁺ and F ⁻ are located in CaF ₂ crystal respectively at face-centred cubic lattice points and in

AIIMS 2015 Solution View → 77

Assertion : Conductivity of silicon increases by doping it with group-15 elements. Reason : Doping means introduction of small amount of impurities like P , As or Bi into the pure

AIIMS 2015 Solution View → 78

Which of the following arrangements correctly represents hexagonal and cubic close packed structure respectively?

JIPMER 2015 Solution View → 79

Ferrous oxide has a cubic structure. The length of edge of the unit cell is 5 Å and the density of the oxide is 4.0 ~g ~cm ⁻³ . Then the number of Fe ²⁺ and O ²⁻ ions present in ea

JIPMER 2015 Solution View → 80

The vacant space in bcc lattice unit cell is:

NEET 2015 Solution View → 81

The correct statement regarding defects in crystalline solids is :

NEET 2015 Solution View → 82

A given metal crystallizes out with a cubic structure having edge length of 361 pm. If there are four metal atoms in one unit cell, what is the radius of one atom?

NEET 2015 Solution View → 83

Assertion: Monoclinic sulphur is an example of monoclinic crystal system. Reason: For a monoclinic system, a b c and = =90^ , 90^ .

AIIMS 2014 Solution View → 84

A forms h c p lattice and B are occupying 1 / 3^ rd of tetrahedral voids, then the formula of compound is

AIIMS 2014 Solution View → 85

Percentage of free space in a body centre cubic unit cell is

JIPMER 2014 Solution View → 86

If a the length of the side of a cube, the distance between the body centered atom one corner atom in the cube will be

NEET 2014 Solution View → 87

In a solid, atom M occupies ccp lattice and 1 / 3^ rd of tetrahedral voids are occupied by atom N . Find the formula of solid formed by M and N .

AIIMS 2013 Solution View → 88

Assertion: The presence of a large number of Schottky defects in NaCl lowers its density. Reason : In NaCl , there are approximately 10^6 Schottky pairs per cm ^3 at room temperatu

AIIMS 2013 Solution View → 89

KF has ccp structure. How many F ⁻ ions and octahedral voids are there in this unit cell respectively?

JIPMER 2013 Solution View → 90

The number of carbon atoms per unit cell of diamond unit cell is

NEET 2013 Solution View → 91

A metal has a fcc lattice. The edge length of the unit cell is 404 pm . The density of the metal is 2.72 ~g ~cm ⁻³ . The molar mass of the metal is ( N_A Avogadro's constant =6.02

NEET 2013 Solution View → 92

In b c c structure contribution of corner and central atom is

AIIMS 2012 Solution View → 93

CsCl has b c c arrangement. Its unit cell edge length is 400 pm . Its inter-ionic distance is

AIIMS 2012 Solution View → 94

The number of atoms contained in a fcc unit cell of a monoatomic substance is

JIPMER 2012 Solution View → 95

The number of octahedral void (s) per atom present in a cubic close-packed structure is

NEET 2012 Solution View → 96

Structure of a mixed oxide is cubic close packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent m

NEET 2012 Solution View → 97

A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm . The diameter of the metal atom is

NEET 2012 Solution View → 98

Schottky defect is

AIIMS 2011 Solution View → 99

Assertion : b c c and h c p has same packing efficiency. Reason : Both have same number of atoms per unit cell and same arrangement.

AIIMS 2011 Solution View → 100

A solid compound X Y has NaCl structure. If the radius of the cation is 100 pm , the radius of the anion ( Y⁻ ) will be

NEET 2011 Solution View → 101

Assertion : Due to Frenkel defect, density of the crystalline solid decreases. Reason : In Frenkel defect, cation or anion leaves the crystal.

AIIMS 2010 Solution View → 102

In tetrag onal crystal system, which of following is not true?

AIIMS 2010 Solution View → 103

A solid A B has the NaCl structure. If radius of cation A⁺ is 120 pm , the maximum possible value of the radius of the anion B⁻ is

JIPMER 2010 Solution View → 104

If a be the edge length of the unit cell and r be the radius of an atom then for fcc arrangement, the correct relation is

JIPMER 2010 Solution View → 105

A B crystallizes in a body centred cubic lattice with edge length ' a ' equal to 387 pm . The distance between two oppositively charged ions in the lattice is

NEET 2010 Solution View → 106

Schottky defect in crystals is observed when

AIIMS 2009 Solution View → 107

The figure shows elliptical orbit of a planet m about the sun S . The shaded area S C D is twice the shaded area S A B . If t ₁ is the time for the planet to move from C to D and t

NEET 2009 Solution View → 108

Copper crystallises in a face-centred cubic lattice with a unit cell length of 361 pm . What is the radius of copper atom in pm ?

NEET 2009 Solution View → 109

Lithium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm , the atomic radius of the lithium will be

NEET 2009 Solution View → 110

Sodium has body centred packing. Distance between two nearest atoms is 3.7 Å . The lattice parameter is :

NEET 2009 Solution View → 111

Copper crystallizes in a face-centred cubic lattice with a unit cell length of 361 pm . What is the radius of copper atom in pm?

NEET 2009 Solution View → 112

Lithium metal crystallizes in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm , the atomic radius of lithium will be :

NEET 2009 Solution View → 113

Sodium has body centred packing. Distance between two nearest atoms is 3.7 Å . The lattice parameter is

NEET 2009 Solution View → 114

The flame colours of metal ions are due to

AIIMS 2008 Solution View → 115

A unit cell of sodium chloride has four formula units. The edge length of the unit cell is (0.564 ~nm ). What is the density of sodium chloride?

AIIMS 2008 Solution View → 116

Total volume of atoms present in a face centred cubic unit cell of a metal is ( (r ) is atomic radius)

JIPMER 2008 Solution View → 117

Pure silicon doped with phosphorus is a

JIPMER 2008 Solution View → 118

Percentage of free space in a body centred cubic unit cell is

NEET 2008 Solution View → 119

Four diatomic species are listed below in different sequences. Which of these presents the correct order of their increasing bond order?

NEET 2008 Solution View → 120

If the lattice parameter for a crystalline structure is 3.6 % , then the atomic radius in fcc crystal is

NEET 2008 Solution View →
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