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SOLID STATE
- Number of particles per unit cell of BCC lattice is
(b) 2
(a) 1
(d) 8
(c) 4 - Co-ordination number of FCC crystal is
(b) 4
(a) 12
(d) 8
(c) 6 - Co-ordination number of HCP crystal is
(b) 6
(a) 4
(d) 12
(c)8 - Empty space in BCC lattice is
(b) 32%
(a) 26%
(d) 68%
(c) 48% - Packing efficiency in simple cubic crystal is
(b)√2/6
(a)π/6
(d)π√3/16
(c)π√3/8 - Packing efficiency in diamond is
(a) 74
(b) 68
(d) 52
(c) 48 - Packing efficiency in CCP lattice is
(a) 34%
(b) 52%
(c) 68%
(d) 74% - Packing efficiency in CsCl type lattice is
(b) 68%
(a) 74%
(d) None
(c) 52% - In cubic arrangement of ‘N’ spheres number of tetrahedral and number of octahedral voids are respectively
(b) N, 2N
(a) N, N
(d) 2N,N
(C) 2N, 2N - Co-ordination number of BCC crystal is
(b) 4
(a) 2
(d) 12
(c) 8 - Number of unit cells in 168.5 g of CSCI crystal is nearly
(b) 3×1023
(a) 6.02×10
(d) None of these
(c) 1.5×103 - In FCC an atom on the face is equally shared by how many unit cells?
(b) 4
(a) 2
(d) 8
(c) 6 - Number of particles per unit cell of FCC crystal is
(b) 4
(a) 2
(d) 12
(c) 8 - In which of the following crystals alternate tetrahedral voids are occupied?
(a) NaC
(b) ZnS
(c) CsCI
(d) CaF - The appearance of colour in solid alkali metal halides is generally due to –
(a) Frenkel defect
(b) Schottky defect
(c) F-Centres
(d) Interstitial defect - Relation between radius of spherical particle (r) and distance of nearest neighbours in a simple cubic crystal is
(b)r=√2d
(a)r=d/2
(C)r=(√3/2)d
(d) None of these - Relation between radius of spherical particle (r) and edge length in FCC crystal is
(b) a =2r
(a) a= 2√2r
(c) a=( 4/√3)r
(d) a - Relation between edge length (a) and distance between nearest neighbours (d) in a BCC crystal is
(b) a √2d
(a) a = d
(c) a=(2/√3)d
(d) None of these - The radius ratio of an octahedral crystal will be
(b) 0.732-0.414
(a) 1-0.732
(d) 0.225-0.155
(c) 0.414-0.225 - The range of radius ratio of tetrahedral crystals will
be
(b) 0.732-0.414
(a) 1-0.732
(d) 0.225 0.155
(c) 0.414-0.225 - Total volume of atoms present in BCC unit cell of a
metal is
(b)8/3πr³
(a)4/3πr³
(c)16/3πr³
(d) 24/3πr³ - Total volume of atoms present in FCC unit cell of a
metal is
(b) 2×4/3πr³
(a)4/3πr³
(d) 6×4/3πr³
(c) 4×4/3πr³ - Total volume of atoms present in HCP unit cell of a
metal is
(b) 24/3 πr³
(a)16/3πr³
(c) 12/3πr³
(d) 8/3πr³ - Number of particles per unit cell of a
simple cubic crystal is
(b) 4
(a) 6
(d) 1
(c) 2 - Number of unit cells in 58.5 g NaCl crystal is nearly
(6) 3.011×10
(a) 6.023 x 1023
(d) 4.5×10
(c) 1.5×1023 - In CsCl crystal arrangement the lattice points are occupied by
(b) CI ions
(a) Cs ions
(C) both Cs and Cs 1ons (d) None of these - In NaCl crystal arrangement, the interstitial sites are occupied by
(b) Cl ions
(a) Na ions
(c) both Na and Ci 1ons
(d) Can’t be predicted - In CaF, the lattice sites are occupied by
(b) F ions
(a) Ca ² ions
(d) None of these
(c) both the ions - In ZnS arrangement Zn2 1ons occupy the…..Void
(b) tetrahedral
(a) octahedral
(d) can’t be said
(c) both - In CaF, crystal the Fions occupy the
(b) octrahedral
(a) tetrahedral
(d) can’t be said
(c) both - In cubic arrangement the lattice points are occupied
by
(6) small atoms
(a) big atoms
(d) none of these
(c) both - In cubic arrangement the voids are occupied by
(b) small atoms
(a) big atoms
(c) both
(d) none of these - In crystal lattice the lattice positions are generally
occupied by
(b) anions
(a) cations
(c) both the ions
(d) none of these - Crystalline solids are generally
(a) isotropic
(6) anisotropic
(c) both of these
(d) volatile - Property of amorphous solid is
(a) isotropic
(b) anisotropic
(c) both of these
(d) can’t be said - In a crystal lattice the interstitial positions are
generally Occupied by
(b) anions
(a) cations
(d) None
(c) both - Co-ordination pattern in CaF, crystal is
(b) 8:8
(a) 4:4
(d) 4:8
(c) 8:4
38, Co-ordination pattern in ZnS crystal is
(b) 4:4
(a) 6:6
(d) None
(c) 8:8
- Co-ordination number of Ci in CsCl crystal is
(b) 6
(a) 4
(d) 12
(c)8 - Co-ordination number of Na in NaCl crystal is-
(b) 8
(a) 4
(d) 6
(c) 12 - Number of formula units per unit cell of NaCl crystal is four. If the edge length of the unit cell is 0.564nm, the density of NaCl crystal is
(b) 2.16 g/cm³
(a) 1.2 g/cm³
(d) 4.56 g/cm³
(c) 3.64g/cm³ - In a cubic arrangement ‘X atoms occupy the corners and Y atoms occupy the face centres. The formula of the compound is
(b) XY³
(a) XY
(d) X³Y
(c)XY³ - In FCC arrangement ‘A’ atoms occupy the corners and B atom is missing from one of the face centred
points. Then formula of the compound is
(b) A²B
(a) AB²
(c) A²B³
(d) A²B⁵ - In a crystal arrangement X atoms are placed at the corners and Y atoms are placed at the body centres. Then formula of the compound is
(b) XY³
(a) XY
(c) X³Y
(d) XY² - in a crystal arrangement ‘A’ atoms are placed at
corners and B’ atoms are placed at alternative faces
of the cube. Formula of the compound is
(a) A²B
(b) AB²
(c) AB
(d) AB³ - In a cubic arrangement the X’ atoms are placed at Corners and body centres. Y atoms are placed at edge centres. The formula of the compound is
(a) X³Y²
(b) X²Y³
(c)X²Y⁵
(d) X⁵Y² - The edge length of a FCC cell of an ionic substance is 508 pm. If the radius of cation is 110 pm, the radius of anion is
(b) 288 pm
(a) 249 pm
(d) None
(c) 398 pm - Empty space in hcp unit cell is
(b) 47.6%
(a) 74%
(d) 26%6
(c) 32% - Number of octahedral sites for each sphere in a close
packed crystal is-
(b) 2
(a) 1
(d) 4
(c) 3 - Interionic distance for CsCl crystal will be
(a) 2a/√3
(b) a/2
(c)√3/2a
(d) None - Number of tetrahedral sites for each sphere in a close packed crystal is –
(b) 2
(a)1
(d) 4
(c) 3 - What is the structure of NaCl?
(b) hcp
(a) bcc
(d) none
(c)fcc - Number of unit in 4g of an element, (atomic mass 40) which crystalises bec pattern is
(a) N⁰/10
(b) N⁰/29
(c) 2N⁰
(d)N⁰ - Co-ordination number of rock salt type structure is
(b) 6
(a) 1
(d) 2
(c) 8 - Bragg’s equation is
(b) nΠ=2n sin ∅
(a) n= 2d sin ∅
(d) ni=sin∅
(c) 2d sin ∅ - In a solid lattice the cation has left a lattice site and is located at an interstitial position. The lattice defect
is known as
(a) Interstitial defect
(b) Frenkel defect
(c) Schottky defect
(d) Cation defect - Schottky defect defines imperfection in the lattice
structure of
(a) solid
(b) liquid
(c) gas
(d) all of these - All the solid crystals can be classified into
(a) 7 crystal systems
(b) 14 crystal systems
(c) 32 crystal systems
(d) 9 crystal systems - Silica is an example of-
(a) covalent crystal
(b) ionic crystal
(d) molecular crystal
(c) metallic crystal - Which of the following is an example of covalent
solid ?
(b) diamond
(a) rock salt
(d) copper
(c) iodine - Crystals which are good conductor of heat and
electricity are
(b) covalent
(a) ionic
(d) metallic
(c) molecular - Ionic solids are characterised
(a) low melting point
(b) extremely volatile
(c) good conductor of electricity in solid state
(d) soluble in polar solvent - Which of the following is amorphous?
(b) rubber
(a) glass
(d) all
(c) bakelite - In a simple cubic crystal each atom on a corner iS
shared by
(a) 4 unit cells
(b)8 unit cells
(c) 6 unit cells
(d) 1 unit cell - Close packing is maximum in the crystal which is
(b) bondy centred cubic
(a) simple cubic
(c) face centered cubic
(d) can’t be predicted - The 8:8 typeof packing is present in
(b) NaCl1
(a) CsC1
(c) ZnS
(d) KCI - The co-ordination number in hep arrangement is
(a) 6
(b) 8
(c) 10
(d) 12 - Schottky defect is generally appears in
(a) CsCI
(b) NaCi
(c) KCI
(d) all of these - n-type semiconductor can be obtained by adding
to pure germanium
(a) Ga
(b) As
(c) Si
(d) B - p-type semiconductor can be obtained by adding –
to pure germanium.
(a) Gr-13 element
(b) Gr-14 element
(c) Gr-15 element
(d) None of these
ANSWERS
1.(b) 2. (a) 3. (d) 4. (b) 5. (a) 6. (a) 7. (d) 8. (b) 9.(d) 10. (c) 11. (a) 12. (a) 13. (b) 14. (b)) 15. (c) 16. (a) 17. (6) 18. (C) 19. (b) 20. (c) 21. (b) 22. (c) 23. (a) 24. (d) 25. (c) 26. (b) 27. (a) 28. (a) 29. (b) 30. (a) 31 (a) 32. (5) 33. (b) 34. (b) 35. (a) 36. (a) 37. (c) 38. (b) 39. (c) 40. (d) 41. (b) 42. (c) 43. (d) 44. (a) 45. (c) 46. (b) 47. (a) 48. (d) 49. (a) 50. (c) 51. (b) 52. (c) 53. (b) 54. (b) 55. (a) 56. (b) 57. (a) 58. (a) 59. (a) 60. (b) 61. (d) 62. (d) 63. (d) 64. (b) 65. (c) 66. (a) 67. (d) 68. (d) 69. (b) 70. (a)
FAQ~
class 12 science Chemistry important questions of solid state class 12 chemistry pdf solid state chemistry important questions with answers pdf solid state chemistry class 12 ncert solutions pdf download solid state pdf solid state chemistry class 12 full chapter solid state class 12 ? types of solid state? solid state ppt? solid state ncert solutions? solid state in hindi ?solid state information? solid state chemistry project? solid state short notes pdf? solid state class 12? types of solid state ? solid state ppt sol? solid state ncert solutions? solid liquid?solid state class 12? solid state ncert solutions? solid state ncert pdf? solid state chemistry class 12 pdf? solid state chemistry class 12 ncert solutions?