MCQ Solid State Class-12 ISC Chapter-1 Chemistry Question . Objective Type Questions for ISC Class-12 Chemistry of Chapter-1 The Solid State for your Semester 1 Exam of 2021-22
These MCQ / Objective Type Questions is based on reduced syllabus according 2021-22 session on bifurcated pattern. Visit official website CISCE for detail information about ISC Board Class-12 Chemistry
The Solid State ISC Chemistry for Class-12 Chapter-1 Question (Objective Type)
| Board | ISC |
| Class | 12th (XII) |
| Subject | Chemistry |
| Chapter-1 | The Solid State |
| Syllabus | on bifurcated syllabus (after reduction) |
| Session | 2021-22 |
| Topic | MCQ / Objective Type Question |
Question 1 : The edge length of fee cell is 508 pm. If radius of cation is 110 pm, the radius of anion is
(a) 110 pm
(b) 220 pm
(c) 285 pm
(d) 144 pm
Answer : (d) 144 pm
Question 2 : The density of a metal which crystallises in bcc lattice with unit cell edge length 300 pm and molar mass 50 g mol-1 will be
(a) 10 g cm-3
(b) 14.2 g cm-3
(c) 6.15 g cm-3
(d) 9.3 2 g cm-3
Answer : (c) 6.15 g cm-3
Question 3 : How many lithium atoms are present in a unit cell with edge length 3.5 Å and density 0.53 g cm-3? (Atomic mass of Li = 6.94):
(a) 2
(b) 1
(c) 4
(d) 6
Answer : (a) 2
Question 4
The distance between Na– and CL– ions in NaCl with a density 2.165 g cm-3 is
(a) 564 pm
(b) 282 pm
(c) 234 pm
(d) 538 pm
Answer :
(b) 282 pm
Question 5
An element with atomic mass 100 has a bcc structure and edge length 400 pm. The density of element is
(a) 10.37 g cm-3
(b) 5.19 g cm-3
(c) 7.29 g cm-3
(d) 2.14 g cm-3
Answer :
(b) 5.19 g cm-3
Question 6
Fe3O4 (magnetite) is an example of
(a) normal spinel structure
(b) inverse spinel structure
(c) fluoride structure
(d) anti fluorite structure
Answer :
(b) inverse spinel structure
Question 7
Which of the following crystals does not exhibit Frenkel defect?
(a) AgBr
(b) AgCl
(c) KBr
(d) ZnS
Answer :
(c) KBr
Question 8
What type of stoichiometric defect is shown by ZnS?
(a) Schottky defect
(b) Frenkel defect
(c) Both Frenkel and Schottky defects
(d) Non-stoichiometric defect
Answer :
(b) Frenkel defect
Question 9
Silver halides generally show
(a) Schottky defect
(b) Frenkel defect
(c) Both Frenkel and Schottky defects
(d) cation excess defect
Answer :
(c) Both Frenkel and Schottky defects
Question 10
Which of the following will have metal deficiency defect?
(a) NaCl
(b) FeO
(c) KCl
(d) ZnO
Answer :
(b) FeO
Question 11
In which pair most efficient packing is present?
(a) hep and bcc
(b) hep and ccp
(c) bcc and ccp
(d) bcc and simple cubic cell
Answer :
(b) hep and ccp
Question 12
What is the effect of Frenkel defect on the density of ionic solids?
(a) The density of the crystal increases
(b) The density of the crystal decreases
(c) The density of the crystal remains unchanged
(d) There is no relationship between density of a crystal and defect present in it
Answer :
(c) The density of the crystal remains unchanged
Question 13
In a Schottky defect
(a) an ion moves to interstitial position between the lattice points
(b) electrons are trapped in a lattice site
(c) some lattice sites are vacant
(d) some extra cations are present in interstitial space
Answer :
(c) some lattice sites are vacant
Question 14
To get n-type of semiconductor, germanium should be doped with
(a) gallium
(b) arsenic
(c) aluminium
(d) boron
Answer :
(b) arsenic
Question 15
p-type semiconductors are formed When Si or Ge are doped with
(a) group 14 elements
(b) group 15 elements
(c) group 13 elements
(d)group 18 elements
Answer :
(c) group 13 elements
Question 16
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
Answer :
(b) Low temperature
Question 17
Which of the following statements about amorphous solids is incorrect ?
(a) They melt over a range of temperature
(b) They are anisotropic
(c) There is no orderly arrangement of particles
(d) They are rigid and incompressible
Answer :
(b) They are anisotropic
Question 18
Which one of the following is non-crystalline or amorphous?
(a) Diamond
(b) Graphite
(c) Glass
(d) Common Salt
Answer :
(c) Glass
Question 19
NaCl type crystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying
(a) high temperature
(b) high pressure
(c) high temperature and high pressure
(d) low temperature and low pressure
Answer :
(b) high pressure
Question 20
How many chloride ions are surrounding sodium ion in sodium chloride crystal ?
(a) 4
(b) 8
(c) 6
(d) 12
Answer :
(c) 6
Question 21
In NaCl structure
(a) all octahedral and tetrahedral sites are occupied
(b) only octahedral sites are occupied
(c) only tetrahedral sites are occupied
(d) neither octahedral nor tetrahedral sites are occupied
Answer :
(b) only octahedral sites are occupied
Question 22
In Zinc blende structure
(a) zinc ions occupy half of the tetrahedral sites
(b) each Zn2- ion is surrounded by six sulphide ions
(c) each S2- ion is surrounded by six Zn2+ ions
(d) it has fee structure
Answer :
(c) each S2- ion is surrounded by six Zn2+ ions
Question 23
A unit cell of BaCl2 (fluorite structure) is made up of
(a) four Ba2+ ions and four Cl– ions
(b) four Ba2- ions and eight Cl– ions
(c) eight Ba² ions and four Cl– ions
(d) four Ba² ions and six Cl– ions
Answer :
(b) four Ba2- ions and eight Cl– ions
Question 24
Alkali halides do not show Frenkel defect because
(a) cations and anions have almost equal size
(b) there is a large difference in size of cations and anions
(c) cations and anions have low coordination number
(d) anions cannot be accommodated in voids
Answer :
(a) cations and anions have almost equal size
Question 25
The coordination number of Y will be in the XY types of crystal:
(a) 6
(b) 8
(c) 12
(d) 4
Answer :
(a) 6
Question 26
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
Answer :
(b) π/6
Question 27
Edge length of unit cell of chromium metal is 287 pm with bcc arrangement. The atomic radius is of the order
(a) 287 pm
(b) 574 pm
(c) 124.27 pm
(d) 143.5 pm
Answer :
(c) 124.27 pm
Question 28
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.
Answer :
(d) They are anisotropic in nature.
Question 29
The coordination number of Y will be in the XY types of crystal:
(a) 6
(b) 8
(c) 12
(d) 4
Answer :
(a) 6
Question 30
Which of the following is an amorphous solid ?
(a) Graphite (C)
(b) Quartz glass (SiO2)
(c) Chrome alum
(d) Silicon carbide (SiC)
Answer :
(b) Quartz glass (SiO2)
Question 31
In 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) 6
Question 32
The number of atoms per unit cell of bcc structure is
(a) 1
(b) 2
(c) 4
(d) 6
Answer :
(b) 2
Question 33
Which of the following crystals does not exhibit Frenkel defect?
(a) AgBr
(b) AgCl
(c) KBr
(d) ZnS
Answer :
(c) KBr
Question 34
What type of stoichiometric defect is shown by ZnS?
(a) Schottky defect
(b) Frenkel defect
(c) Both Frenkel and Schottky defects
(d) Non-stoichiometric defect
Answer :
(b) Frenkel defect
Question 35
NaCl type crystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying
(a) high temperature
(b) high pressure
(c) high temperature and high pressure
(d) low temperature and low pressure
Answer :
(b) high pressure
Question 36
How many chloride ions are surrounding sodium ion in sodium chloride crystal ?
(a) 4
(b) 8
(c) 6
(d) 12
Answer :
(c) 6
Question 37
In NaCl structure
(a) all octahedral and tetrahedral sites are occupied
(b) only octahedral sites are occupied
(c) only tetrahedral sites are occupied
(d) neither octahedral nor tetrahedral sites are occupied
Answer :
(b) only octahedral sites are occupied
Question 38
Silver halides generally show
(a) Schottky defect
(b) Frenkel defect
(c) Both Frenkel and Schottky defects
(d) cation excess defect
Answer :
(c) Both Frenkel and Schottky defects
Question 39
Which of the following will have metal deficiency defect?
(a) NaCl
(b) FeO
(c) KCl
(d) ZnO
Answer :
(b) FeO
Question 40
What is the effect of Frenkel defect on the density of ionic solids?
(a) The density of the crystal increases
(b) The density of the crystal decreases
(c) The density of the crystal remains unchanged
(d) There is no relationship between density of a crystal and defect present in it
Answer :
(c) The density of the crystal remains unchanged
Question 41
In a Schottky defect
(a) an ion moves to interstitial position between the lattice points
(b) electrons are trapped in a lattice site
(c) some lattice sites are vacant
(d) some extra cations are present in interstitial space
Answer :
(c) some lattice sites are vacant
Question 42
To get n-type of semiconductor, germanium should be doped with
(a) gallium
(b) arsenic
(c) aluminium
(d) boron
Answer :
(b) arsenic
Question 43
Iodine molecules are held in the crystals lattice by ________.
(a) london forces
(b) dipole-dipole interactions
(c) covalent bonds
(d) coulombic forces
Answer :
(a) london forces
Question 44
Alkali halides do not show Frenkel defect because
(a) cations and anions have almost equal size
(b) there is a large difference in size of cations and anions
(c) cations and anions have low coordination number
(d) anions cannot be accommodated in voids
Answer :
(a) cations and anions have almost equal size
Question 45
A unit cell of BaCl2 (fluorite structure) is made up of
(a) four Ba2+ ions and four Cl– ions
(b) four Ba2- ions and eight Cl– ions
(c) eight Ba² ions and four Cl– ions
(d) four Ba² ions and six Cl– ions
Answer :
(b) four Ba2- ions and eight Cl– ions
–: End of MCQ Solid State Class-12 ISC Chapter-1 Chemistry Question :-
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