1.

    Which defect does NOT affect the density of the crystal?

    A

    Schottky defect

    B

    Frenkel defect

    C

    Metal excess defect

    D

    Metal deficiency defect

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Stoichiometric Defects, Frenkel Defect, Crystal Density

    Related Questions

    1.

    Zinc oxide becomes yellow upon heating due to:

    A

    Metal deficiency defect.

    B

    Metal excess defect due to interstitial cations and electrons.

    C

    Frenkel defect.

    D

    Schottky defect.

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Non-Stoichiometric Defects, Metal Excess Defect, ZnO

    2.

    Which one of the following has Frenkel defect?

    A

    NaCl{\rm{NaCl}}

    B

    AgBr{\rm{AgBr}}

    C

    Graphite

    D

    Diamond

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Frenkel defect, ionic solids, crystal defects

    3.

    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

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Schottky defect, crystal defects, stoichiometry

    4.

    Among the following types of voids, which one is the largest void?

    A

    Tetrahedral

    B

    Octahedral

    C

    Cubic

    D

    Triangular

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Crystal Structures, Voids, Packing Efficiency

    5.

    A solid is made of two elements XX and ZZ. The atoms ZZ are in ccp arrangement while the atom XX occupy all the tetrahedral sites. What is the formula of the compound?

    A

    XZXZ

    B

    XZ2X{Z_2}

    C

    X2Z{X_2}Z

    D

    X2Z3{X_2}{Z_3}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Cubic Close Packing (ccp), Tetrahedral Voids, Chemical Formula

    6.

    Which defect does not disturb the density of the solid?

    A

    Schottky defect

    B

    Metal excess defect

    C

    Frenkel defect

    D

    Metal deficiency defect

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Frenkel Defect, Crystal Defects, Density of Solids

    7.

    Which is the wrong statement regarding a crystal containing Schottky defect?

    A

    Density of the crystal increases

    B

    Electrical neutrality of the crystal is maintained

    C

    It is a stoichiometric defect

    D

    Equal number of cations and anions are missing from the lattice

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Schottky defect, Crystal defects, Electrical neutrality, Entropy, Density

    8.

    How many octahedral and tetrahedral holes are present per unit cell in a face centred cubic arrangement of atoms?

    A

    8,48,{\rm{ }}4

    B

    1,21,{\rm{ }}2

    C

    4,84,{\rm{ }}8

    D

    2,12,{\rm{ }}1

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :crystal structure, face-centered cubic, octahedral holes, tetrahedral holes

    9.

    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

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Schottky defect, crystal defects, ionic compounds

    10.

    In a solid lattice, the cation has left a lattice site and is located at an interstitial position, the lattice defect is

    A

    Frenkel defect

    B

    Schottky defect

    C

    F-centre defect

    D

    Valency defect

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:The Solid State
    🎯Topic:Stoichiometric Defects, Non-Stoichiometric Defects
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Solid state defects, Frenkel defect, Schottky defect, F-center, Valency defect

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