MCQs for NCERT Class 12 Chemistry Chapter 1 The Solid State

MCQs Class 12

Please refer to the MCQ Questions for Class 12 Chemistry Chapter 1 The Solid State with Answers. The following Solid State Class 12 Chemistry MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 12. Our experts have designed MCQ Questions for Class 12 Chemistry with Answers for all chapters in your NCERT Class 12 Chemistry book.

The Solid State Class 12 MCQ Questions with Answers

See below Solid State Class 12 Chemistry MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. The cubic unit cell of a metal (molar mass = 63.55g mol–1) has an edge length of 362 pm. Its density is 8.92g cm–3.The type of unit cell is
(a) primitive
(b) face centered
(c) body centered
(d) end centered

Answer

B

Question. In the hexagonal close packed structure of a metallic lattice,the number of nearest neighbours of a metallic atom is
(a) twelve
(b) four
(c) eight
(d) six

Answer

A

Question. The Ca2+ and F are located in CaF2 crystal, respectively at face centred cubic lattice points and in
(a) tetrahedral voids
(b) half of tetrahedral voids
(c) octahedral voids
(d) half of octahedral voids

Answer

A

Question. The sharp melting point of crystalline solids is due to _____.
(a) a regular arrangement of constituent particles observed over a short distance in the crystal lattice.
(b) a regular arrangement of constituent particles observed over a long distance in the crystal lattice.
(c) same arrangement of constituent particles in different directions.
(d) different arrangement of constituent particles in different directions.

Answer

B

Question. The arrangement ABC ABC ………. is referred to as
(a) Octahedral close packing
(b) Hexagonal close packing
(c) Tetrahedral close packing
(d) Cubic close packing

Answer

D

Question. An example of a covalent crystalline solid is:
(a) Si
(b) Al
(c) NaF
(d) Ar

Answer

A

Question. Among solids, the highest melting point is exhibited by
(a) Covalent solids
(b) Ionic solids
(c) Pseudo solids
(d) Molecular solids

Answer

A

Question. What is the coordination number in a square close packed structure in two dimensions ?
(a) 2
(b) 3
(c) 4
(d) 6

Answer

C

Question. In the cubic close packing, the unit cell has ______.
(a) 4 tetrahedral voids each of which is shared by four adjacent unit cells.
(b) 4 tetrahedral voids within the unit cell.
(c) 8 tetrahedral voids each of the which is shared by four adjacent unit cells.
(d) 8 tetrahedral voids within the unit cells.

Answer

D

Question. Which of the following is the correct increasing order of packing efficiency for hcp, bcc and simple cubic lattice?
(a) hcp < bcc < simple cubic
(b) bcc < hcp < simple cubic
(c) simple cubic < bcc < hcp
(d) simple cubic < hcp < bcc

Answer

C

Question. Total volume of atoms present in bcc unit cell is. 

MCQs for NCERT Class 12 Chemistry Chapter 1 The Solid State
Answer

C

Question. Frenkel and Schottky defects are :
(a) nucleus defects
(b) non-crystal defects
(c) crystal defects
(d) nuclear defects

Answer

C

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

MCQs for NCERT Class 12 Chemistry Chapter 1 The Solid State
Answer

B

Question. Hexagonal close packed arrangement of ions is described as
(a) ABC ABA
(b) ABC ABC
(c) ABABA
(d) ABBAB

Answer

C

Question. Percentages of free space in cubic close packed structure and in body centered packed structure are respectively
(a) 30% and 26%
(b) 26% and 32%
(c) 32% and 48%
(d) 48% and 26%

Answer

B

Question. A crystalline solid
(a) changes abruptly from solid to liquid when heated
(b) has no definite melting point
(c) undergoes deformation of its geometry easily
(d) has an irregular 3-dimensional arrangements

Answer

A

Question. A metallic crystal crystallizes into a lattice containing a sequence of layers AB AB AB……Any packing of spheres leaves out voids in the lattice. What percentage of volume of this lattice is empty space?
(a) 74%
(b) 26%
(c) 50%
(d) none of these.

Answer

B

Question. The major binding force of diamond, silicon and quartz is
(a) electrostatic force
(b) electrical attraction
(c) covalent bond force
(d) non-covalent bond force

Answer

C

Question. In graphite electrons are :
(a) localised on each carbon atom
(b) spread out between the sheets
(c) localised on every third carbon atom
(d) present in antibonding orbital.

Answer

B

Question. In NaCl, the centre-to-centre nearest-neighbour distance of ions is 

MCQs for NCERT Class 12 Chemistry Chapter 1 The Solid State
Answer

B

Question. The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behaviour is a characteristic of substance forming
(a) allotropic crystals
(b) liquid crystals
(c) isomeric crystals
(d) isomorphous crystals.

Answer

B

Question. Glass is a
(a) liquid
(b) solid
(c) supercooled liquid
(d) transparent organic polymer.

Answer

C

Question. Most crystals show good cleavage because their atoms, ions or molecules are
(a) weakly bonded together
(b) strongly bonded together
(c) spherically symmetrical
(d) arranged in planes. 

Answer

D

Question. The ability of a substance to assume two or more crystalline structures is called
(a) isomerism
(b) polymorphism
(c) isomorphism
(d) amorphism

Answer

B

Question. Cation and anion combines in a crystal to form following type of compound
(a) ionic
(b) metallic
(c) covalent
(d) dipole-dipole. 

Answer

A

Question. For two ionic solids CaO and KI, identify the wrong statement among the following.
(a) CaO has high melting point.
(b) Lattice energy of CaO is much larger than that of KI.
(c) KI has high melting point.
(d) KI is soluble in benzene

Answer

D

Question. For orthorhombic system axial ratios are a ≠ b ≠ c and the axial angles are
(a) α = β = γ ≠ 90º
(b) α = β = γ = 90º
(c) α = γ = 90º, β ≠ 90º
(d) α ≠ β ≠ γ ≠ 90º

Answer

B

Question. The number of carbon atoms per unit cell of diamond unit cell is
(a) 6
(b) 1
(c) 4
(d) 8 

Answer

D

Question. In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells?
(a) 2
(b) 4
(c) 6
(d) 8 

Answer

C

Question. When Zn converts from melted state to its solid state, it has hcp structure, then find the number of nearest atoms.
(a) 6
(b) 8
(c) 12
(d) 4 

Answer

C

Question. The fcc crystal contains how many atoms in each unit cell?
(a) 6
(b) 8
(c) 4
(d) 5.

Answer

C

Question. The number of atoms contained in a fcc unit cell of a monatomic substance is
(a) 1
(b) 2
(c) 4
(d) 6

Answer

C

Question. 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
(a) C4A3
(b) C2A3
(c) C3A2
(d) C3A4

Answer

D

Question. In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion (Ca2+) and fluoride ion (F–) are
(a) 4 and 2
(b) 6 and 6
(c) 8 and 4
(d) 4 and 8 

Answer

C

Question. 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
(a) 8
(b) 2
(c) 6
(d) 4 

Answer

C

Question. The number of octahedral void(s) per atom present in a cubic close-packed structure is
(a) 1
(b) 3
(c) 2
(d) 4

Answer

A

Question. 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 metal A and the octahedral voids are occupied by a monovalent metal B. The formula of the oxide is
(a) ABO2
(b) A2BO2
(c) A2B3O4
(d) AB2O2 

Answer

D

Question. A solid compound XY has NaCl structure. If the radius of the cation is 100 pm, the radius of the anion (Y–) will be
(a) 275.1 pm
(b) 322.5 pm
(c) 241.5 pm
(d) 165.7 pm

Answer

C

Question. A compound formed by elements X and Y crystallises in a cubic structure in which the X atoms are at the corners of a cube and the Y atoms are at the facecentres.
The formula of the compound is
(a) XY3
(b) X3Y
(c) XY
(d) XY2 

Answer

A

Question. In cube of any crystal A-atom placed at every corners and B-atom placed at every centre of face. The formula of compound is
(a) AB
(b) AB3
(c) A2B2
(d) A2B3 

Answer

B

Question. In crystals of which one of the following ionic compounds would you expect maximum distance between centres of cations and anions?
(a) CsI
(b) CsF
(c) LiF
(d) LiI 

Answer

A

Question. The second order Bragg diffraction of X-rays with λ = 1.00 Å from a set of parallel planes in a metal occurs at an angle 60°. The distance between the scattering planes in the crystal is
(a) 2.00 Å
(b) 1.00 Å
(c) 0.575 Å
(d) 1.15 Å

Answer

D

Question. The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class is
(a) face-centred cube
(b) simple cube
(c) body-centred cube
(d) none of these. 

Answer

C

Question. In the fluorite structure, the coordination number of Ca2+ ion is
(a) 4
(b) 6
(c) 8
(d) 3

Answer

C

Question. The vacant space in bcc lattice unit cell is
(a) 48%
(b) 23%
(c) 32%
(d) 26%

Answer

C

Question. If a is the length of the side of a cube, the distance between the body-centred atom and one corner atom in the cube will be
(a) 2/√3a
(b) 4/√3a
(c) √3/4a
(d) √3/2a

Answer

D

Question. A metal crystallises with a face-centred cubic lattice.The edge of the unit cell is 408 pm. The diameter of the metal atom is
(a) 288 pm
(b) 408 pm
(c) 144 pm
(d) 204 pm 

Answer

A

Question. AB crystallizes in a body-centred cubic lattice with edge length ‘a’ equal to 387 pm. The distance between two oppositely charged ions in the lattice is
(a) 335 pm
(b) 250 pm
(c) 200 pm
(d) 300 pm 

Answer

A

Question. 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 lithium will be
(a) 151.8 pm
(b) 75.5 pm
(c) 300.5 pm
(d) 240.8 pm 

Answer

A

Question. 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?
(a) 157
(b) 181
(c) 108
(d) 128

Answer

D

Question. Which of the following statements is not correct?
(a) The number of carbon atoms in a unit cell of diamond is 8.
(b) The number of Bravais lattices in which a crystal can be categorized is 14.
(c) The fraction of the total volume occupied by the atoms in a primitive cell is 0.48.
(d) Molecular solids are generally volatile.

Answer

C

Question. The pyknometric density of sodium chloride crystal is 2.165 × 103 kg m–3 while its X-ray density is 2.178 × 103 kg m–3. The fraction of unoccupied sites in sodium chloride crystal is
(a) 5.96
(b) 5.96 × 10–2
(c) 5.96 × 10–1
(d) 5.96 × 10–3 

Answer

D

Question. The edge length of face-centred unit cubic cells is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is
(a) 144 pm
(b) 398 pm
(c) 288 pm
(d) 618 pm

Answer

A

Question. Iron exhibits bcc structure at room temperature.
Above 900°C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900°C (assuming molar mass and atomic radii of iron remains constant with temperature) is
(a) √3/√2
(b) 4√3 /3√2
(c) 3√3 /4√2
(d) 1/2

Answer

C

Question. Lithium has a bcc structure. Its density is 530 kg m–3 and its atomic mass is 6.94 g mol–1. Calculate the edge length of a unit cell of lithium metal. (NA = 6.02 × 1023 mol–1)
(a) 527 pm
(b) 264 pm
(c) 154 pm
(d) 352 pm

Answer

A

Question. 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 (NA Avogadro’s constant = 6.02 × 1023 mol–1)
(a) 27 g mol–1
(b) 20 g mol–1
(c) 40 g mol–1
(d) 30 g mol–1

Answer

A

Question. CsBr crystallises in a body-centred cubic lattice.
The unit cell length is 436.6 pm. Given that the atomic mass of Cs = 133 and that of Br = 80 amu and Avogadro number being 6.02 × 1023 mol–1, the density of CsBr is
(a) 4.25 g/cm3
(b) 42.5 g/cm3
(c) 0.425 g/cm3
(d) 8.25 g/cm3 

Answer

A

Question. An element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. The density of element is
(a) 7.289 g/cm3
(b) 2.144 g/cm3
(c) 10.376 g/cm3
(d) 5.188 g/cm3

Answer

D

Question. Formula of nickel oxide with metal deficiency defect in its crystal is Ni0.98O. The crystal contains Ni2+ and Ni3+ ions. The fraction of nickel existing as Ni2+ ions
in the crystal is
(a) 0.96
(b) 0.04
(c) 0.50
(d) 0.3

Answer

A

Question. The correct statement regarding defects in crystalline solids is
(a) Frenkel defects decrease the density of crystalline solids
(b) Frenkel defect is a dislocation defect
(c) Frenkel defect is found in halides of alkaline metals
(d) Schottky defects have no effect on the density of crystalline solids. 

Answer

B

Question. The appearance of colour in solid alkali metal halides is generally due to
(a) interstitial positions
(b) F-centres
(c) Schottky defect
(d) Frenkel defect. 

Answer

B

Question. Schottky defect in crystals is observed when
(a) density of the crystal is increased
(b) unequal number of cations and anions are missing from the lattice
(c) an ion leaves its normal site and occupies an interstitial site
(d) equal number of cations and anions are missing from the lattice

Answer

D

STATEMENT TYPE QUESTIONS

Question. Which of the following statements is /are correct?
(i) LiCl crystals are pink due to metal excess defect due to presence of extra L+i ion at interstitial sites.
(ii) Zinc oxide on heating turns yellow because its anionic sites are occupied by unpaired electrons.
(iii) In FeO crystals some Fe2+ are missing and the loss of positive charge is made up by the presence of required number of Fe3+ ions.
(a) (i) and (ii)
(b) (i), (ii) and (iii)
(c) (ii) and (iii)
(d) (iii) only

Answer

D

Question. Which of the following sequence of T and F is correct? Here ‘T’ stands for true and ‘F’ stands for false statement.
(i) Solids have conductivities in the order of 10–20 to 107 ohm–1 m–1.
(ii) In semiconductors the gap between filled valence band and conduction band is small.
(iii) Electrical conductivity of insulators increases with rise in temperature.
(iv) Insulators have conductivities ranging between 10–6 to 104 ohm–1 m–1 .
(a) TTFF
(b) TTFT
(c) FTFF
(d) FTTF

Answer

A

Question. Which of the following statements(s) is/are incorrect?
(i) Only 1/8th portion of an atom located at corner of a cubic unit cell is its neighbouring unit cell.
(ii) Total number of atoms per unit cell for a face centered cubic unit cell is 3 .
(iii) Atom located at the body center is shared between two adjacent unit cells.
(a) (iii) only
(b) (ii) only
(c) (i) and (ii)
(d) (ii) and (iii)

Answer

D

Question. Consider the Oxygen and chromium dioxide, both are placed in magnetic field:
(i) Oxygen is attracted strongly in a magnetic field.
(ii) Magnetic field persist in chromium dioxide while in Oxygen not.
(a) Both Statements are correct.
(b) Statements (i) is correct only.
(c) Statements (ii) is correct only.
(d) Both Statements are incorrect.

Answer

C

Question. Which of the following is/are not true about the voids formed in 3 dimensional hexagonal close packed structure ?
(i) A tetrahedral void is formed when a sphere of the second layer is present above triangular void in the first layer.
(ii) All the triangular voids are not covered by the spheres of the second layer.
(iii) Tetrahedral voids are fomed when the triangular voids in the second layer lie above the triangular voids in the first layer and the triangular shapes of these voids do not overlap.
(iv) Octahedral voids are formed when the triangular voids in the second layer exactly overlap with similar voids in the first layer.
(a) (i) and (iv)
(b) (iii) and (iv)
(c) (ii) and (iii)
(d) (iv) only

Answer

B

Question. Which of the following statement(s) is/are correct?
(i) Crystalline solids have definite characteristic geometrical shape.
(ii) Crystalline solids have long range order.
(iii) Sodium chloride and quartz glass are examples of crystalline solids.
(iv) Crystalline solids are isotropic in nature.
(a) (i), (ii) and (iii)
(b) (i), (ii) and (iv)
(c) (i) and (ii)
(d) (i) only

Answer

C

Question. Which of the following sequence of T and F is true for given statements. Here T stands for true statement and F stands for false statement?
(i) Frenkel defect results in increase in density of the solid.
(ii) ZnS, AgCl, AgBr and AgI shows Frenkel defect.
(iii) Schottky defect results in decrease in density of the solid.
(iv) AgBr shows Schottky defect only.
(v) For NaCl there is one Schottky defect per 1016 ions.
(a) TTTFT
(b) TTTFF
(c) FTTFT
(d) FTTFF

Answer

C

Question. Which of the following sequence of T and F is correct for given statements. Here T stands for true statement and F stands for false statement?
(i) Ionic solids are electrical insulators in the solid state but conduct electricity in molten state.
(ii) Graphite is a covalent solid.
(iii) Covalent solids are conductor of electricity.
(iv) Non polar molecular solids are held by weak dispersion forces or London forces while polar molecular solids are held by stronger dipole – dipole interactions.
(a) TTTF
(b) FTTF
(c) TFTT
(d) TTFT

Answer

D

Solid State Class 12 Chemistry MCQ Questions