Students of class 12 Chemistry should refer to MCQ Questions Class 12 Chemistry The Solid State with answers provided here which is an important chapter in Class 12 Chemistry NCERT textbook. These MCQ for Class 12 Chemistry with Answers have been prepared based on the latest CBSE and NCERT syllabus and examination guidelines for Class 12 Chemistry. The following MCQs can help you to practice and get better marks in the upcoming class 12 Chemistry examination

Chapter 1 The Solid State MCQ with Answers Class 12 Chemistry

MCQ Questions Class 12 Chemistry The Solid State provided below have been prepared by expert teachers of grade 12. These objective questions with solutions are expected to come in the upcoming Standard 12 examinations. Learn the below provided MCQ questions to get better marks in examinations.

Question. The number of atoms in a face centred cubic unit cell is
(a) 2
(b) 4
(c) 5
(d) 6

Question. In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is:
(a) AB2
(b) A2B3
(c) A2B5
(d) A2B

Question. In stoichiometric defects, the types of compound exhibit Frenkel defects have/has
(a) Low co-ordination nos.
(b) High co-ordination
(c) Small difference in the size of cations and anions
(d) None of these

Question. Which of the following statement is not true about amorphous solids? 
(a) On heating they may become crystalline at certain temperature.
(b) They may become crystalline on keeping for long time.
(c) Amorphous solids can be moulded by heating.
(d) They are anisotropic in nature.

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.

Question. Which one of the following is a covalent crystal?
(a) Rock salt
(b) Ice
(c) Quartz
(d) Dry ice

Question. Which of the following solids is not an electrical conductor?
(i) Mg(s)
(ii) TiO(s)
(iii) I2(s)
(iv) H2O(s)
(a) (i) only
(b) (ii) only
(c) (iii) and (iv)
(d) (ii), (iii) and (iv)

Question. The crystal with metal deficiency defect is
(a) NaCl
(b) FeO
(c) KCl
(d) ZnO

Question. Which of the following is a network solid ?
(a) SO2 (solid)
(b) I2
(c) Diamond
(d) H2O (Ice)

Question. Which of the following solids is not an electrical conductor?
(a) Mg (s)
(b) TiO (s)
(c) I2 (s)
(d) H2O (s)

Question. The total number of tetrahedral voids in the face centred unit cell is __________.
(a) 6
(b) 8
(c) 10
(d) 12

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) 250 pm
(b) 200 pm
(c) 300 pm
(d) 335 pm

Question. If a stands for the edge length of the cubic systems: simple cubic, body centred cubic and face centred cubic, then the ratio of the radius of the spheres in these systems will be respectively
(a) 1/2a:√3/4a:1/2√2a
(b) 1/2a:√3a:1/√2a
(c) 1/2a:√3/2a:√2/2
(d) 1a:3a:√2a

Question. Which of the following crystals does not exhibit Frenkel defect?
(a) AgBr
(b) AgCl
(c) KBr
(d) ZnS

Question. Which of the following is true about the charge acquired by p-type semiconductors?
(a) Positive
(b) Neutral
(c) Negative
(d) Depends on concentration of p impurity

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

Question. Which of the following is not a characteristic of a crystalline solid ?
(a) Definite and characteristic heat of fusion.
(b) Isotropic nature.
(c) A regular periodically repeated pattern of arrangement of constituent particles in the entire crystal.
(d) A true solid

Question. Which of the following is not a crystalline solid?
(a) KCl
(b) CsCl
(c) Glass
(d) Rhombic S

Question. Which of the following is not a crystalline solid?
(a) KCl
(b) CsCl
(c) Glass
(d) Rhombic S

Question. In which pair most efficient packing is present?
(a) hcp and bcc
(b) hcp and ccp
(c) bcc and ccp
(d) bcc and simple cubic cell

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

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

Question. Crystals can be classified into basic crystal units, equal to
(a) 7
(b) 4
(c) 14
(d) 2

Question. The fraction of the total volume occupied by the atoms present in a simple cube is
(a) π/4
(b) π/6
(c) π/(3√2)
(d) π/(4√2)

Question. Each of the following solids show, the Frenkel defect except
(a) ZnS
(b) AgBr
(c) AgI
(d) KCl

Question. When molten zinc is converted into solid state, it acquires hcp structure. The number of nearest neighbours of Zn will be
(a) 6
(b) 12
(c) 8
(d) 4

Question. A metallic crystal has the bcc type staking pattern. What percentage of volume of this lattice is empty space?
(a) 68%
(b) 32%
(c) 26%
(d) 74%

Question. Which of the following is an amorphous solid ?
(a) Graphite (C)
(b) Quartz glass (SiO2)
(c) Chrome alum
(d) Silicon carbide (SiC)

Question. How many three dimensional crystal lattice are possible?
(a) 20
(b) 7
(c) 14
(d) 10

Question. Which one of the following forms a molecular solid when solidified?
(a) Silicon carbide
(b) Calcium fluoride
(c) Rock salt
(d) Methane

Question. Which of the following is not a characteristic of a crystalline solid? 
(a) Definite and characteristic heat of fusion.
(b) Isotropic nature.
(c) A regular periodically repeated pattern of arrangement of constituent particles in the entire crystal.
(d) A true solid

Question. Schottky defect defines imperfection in the lattice structure of
(a) solid
(b) gas
(c) liquid
(d) plasma

Question. If Z is the number of atoms in the unit cell that represents the closest packing sequence—ABC ABC, the number of tetrahedral voids in the unit cell is equal to
(a) Z
(b) 2Z
(c) Z/2
(d) Z4

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

Question. The number of atoms per unit cell of bcc structure is
(a) 1
(b) 2
(c) 4
(d) 6

Question. Which of the following is true about the value of refractive index of quartz glass? 
(a) Same in all directions
(b) Different in different directions
(c) Cannot be measured
(d) Always zero

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

Question. Pottasium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density (in kg m–3) will be
(a) 454
(b) 804
(c) 852
(d) 910

Question. An element occuring in the bcc structure has 12.08 × 1023unit cells. The total number of atoms of the element in these cells will be
(a) 24.16 × 1023
(b) 36.18 × 1023
(c) 6.04 × 1023
(d) 12.08 × 1023

Question. When electrons are trapped into the crystal in anion vacancy, the defect is known as :
(a) Schottky defect
(b) Frenkel defect
(c) Stoichiometric defect
(d) F-centre

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

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

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

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

Question. Which of the following exists as covalent crystals in the solid state ?
(a) Iodine
(b) Silicon
(c) Sulphur
(d) Phosphorus

Question. Equal number of atoms or ion missing from normal lattice point creating a vacancy due to
(a) Frenkel defect
(b) Mass defect
(c) Schottky defect
(d) Interstitial defect

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

Question. Which of the following conditions favours the existence of a substance in the solid state?
(a) High temperature
(b) Low temperature
(c) High thermal energy
(d) Weak cohesive forces

Question. Which of the following has Frenkel defects?
(a) Sodium chloride
(b) Graphite
(c) Silver bromide
(d) Diamond

Question. Due to Frenkel defect, the density of ionic solids
(a) decreases
(b) increases
(c) neither (a) nor (b)
(d) does not change

We hope the above multiple choice questions for Class 12 Chemistry for Chapter 1 The Solid State provided above with answers based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS are really useful for you. The Solid State is an important chapter in Class 12 as it provides very strong understanding about this topic. Students should go through the answers provided for the MCQs after they have themselves solved the questions. All MCQs have been provided with four options for the students to solve. These questions are really useful for benefit of class 12 students. Please go through these and let us know if you have any feedback in the comments section.