JEE Questions for Chemistry The Solid State Quiz 3 - MCQExams.com

The number of hexagonal faces that are present in a truncated octahedron is
  • 2
  • 4
  • 6
  • 8
The unit cell with dimensions α = β = γ = 90o, a = b ≠ c is
  • cubic
  • triclinic
  • hexagonal
  • tetragonal
Barium titanate has the perovskite structure, i.e. a cubic lattice with Ba2+ ions at the corners of the unit cell, oxide ions at the face centres and titanium ions at the body centre. The molecular formula of barium titanate is
  • BaTiO3
  • BaTiO4
  • BaTiO2
  • BaTiO
The packing efficiency of the two dimensional square unit cell shown below is
Chemistry-The Solid State-8551.png
  • 39.27%
  • 68.02
  • 74.05%
  • 78.54%
Percentage of free space in cubic close packed structure and in body centred packed structure are respectively
  • 30% and 26%
  • 26% and 32%
  • 32% and 48%
  • 48% and 26%
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
  • A2B
  • AB2
  • A2B2
  • A2B5
The lattice points of a crystal of hydrogen iodide are occupied by
  • HI molecules
  • H atoms and I atoms
  • H+ cations and I- anions
  • H2 molecules and I2 molecules
In NaCl crystal each Cl- ion is surrounded by
  • 4 Na+ ions
  • 6 Na+ ions
  • 1 Na+ ions
  • 2Na+ ions
In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3rd of tetrahedral voids. The formula of the compound will be
  • X4Y3
  • X2Y3
  • X2Y
  • X3Y4
In which of the following crystals alternate tetrahedral voids are occupied?
  • NaCl
  • ZnS
  • CaF2
  • Na2O
In an antifluorite structure, cations occupy
  • octahedral voids
  • centre of cube
  • tetrahedral voids
  • corners of cube
CsCl crystallises in body centred cubic lattice. If 'a' is its edge length, then which of the following expression is correct ?
  • rCs+ + rCl- = 3a
  • rCs+ + rCl- = 3a/2

  • Chemistry-The Solid State-8553.png
  • rCs+ + rCl- = √3a
A metal has bcc structure and the edge length of its unit cell is 3.04 Å. The volume of the unit cell in cm3 will be
  • 1.6 × 1021 cm3
  • 2.81 × 10-23 cm3
  • 6.02 × 10-23 cm3
  • 6.6 × 10-24 cm3
KBr crystallises in NaCl type of crystal lattice and its density is 2.75 g/cm3. Number of unit cell of KBr are
  • 3.6 × 1018
  • 3.6 × 1016
  • 2.34 × 1023
  • 6.02 × 1024
Volume occupied by single CsCl ion pair in a crystal is 7.014 × 10-23 cm3. The smallest Cs-Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one CsCl ion pair. The smallest Cs to Cs internuclear distance is nearly
  • 4.4Å
  • 4.3 Å
  • 4 Å
  • 4.5 Å
An organic compound crystallises in an orthorhombical cell in the ratio of 2 : 1. The dimensions of cell are 12.05, 15.05 and 2.69 Å and density is 1.419 g /cm3, find molar density of the compound
  • 207 g/ mol
  • 209 g/ mol
  • 308 g/ mol
  • 317 g/ mol
Lithium forms body-centred cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will be
  • 75 pm
  • 300 pm
  • 240 pm
  • 152 pm
Silver (atomic weight = 108 g mol-1 ) has a density of 10.5 g cm-3. The number of silver atoms on a surface of area 10-12 m2 can be expressed in scientific notation as y × 10x . The value of x is
  • 3
  • 5
  • 7
  • 9
Copper crystallises in fcc lattice with a unit cell edge of 361 pm. The radius of copper atom is
  • 181 pm
  • 108 pm
  • 128 pm
  • 157 pm
The first order reflection (n =from a crystal of the X-ray from a copper anode tube (λ =1.54 Å ) occurs at an angle of 45°. What is the distance between the set of plane causing the diffraction?
  • 0.1089 mm
  • 0.1089 m
  • 0.905 Å
  • 1.089 × 10-9 m
The edge length of a face centred cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is
  • 288 pm
  • 398 pm
  • 618 pm
  • 144 pm
If the radius of K+ and F- are 133 pm and 136 pm respectively, the distance between K+ and F- in KF is
  • 269 pm
  • 134.5 pm
  • 136 pm
  • 3 pm
Copper crystallises in fcc with a unit cell length of 361 pm. What is the radius of copper atom?
  • 108 pm
  • 127 pm
  • 157 pm
  • 181 pm
The radius ratio in CsCl is 0.93. The expected lattice structure is
  • tetrahedral
  • square planar
  • octahedral
  • body centred cubic
The cubic unit cell of Al (molar mass 27 gmol-1 ) has an edge length of 405 pm. Its density is 2.7 g cm-3. The cubic unit cell is
  • face centred
  • body centred
  • primitive
  • edge centred
  • simple
How many unit cells are present in a cube shaped ideal crystal of NaCl of mass 1.00 g?
(Atomic masses Na = 23, Cl = 35.
  • 2.57 × 1021
  • 5.14 × 1021
  • 1.28 × 1021
  • 1.71 × 1021
Which is the wrong statement regarding a crystal containing Schottky defect?
  • Electrical neutrality of the crystal is maintained
  • Entropy of the crystal increases
  • The density of the overall crystal remains the same
  • The density of the overall crystal reduces
Experimentally it was found that a metal oxide has formula M0.98 O. Metal M, present as M2+ and M3+ in its oxide. Fraction of the metal which exists as M3+ would be
  • 7.01%
  • 4.08%
  • 6.05%
  • 5.08%
A compound MPXq has cubic close packing (ccp) arrangement of X. Its unit cell structure is shown below. The empirical formula of the compound, is
Chemistry-The Solid State-8564.png
  • MX
  • MX2
  • M2X
  • M5X14
Which among the following will show anisotropy?
  • Glass
  • Barium chloride
  • Wood
  • Paper
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