JEE Questions for Chemistry The Solid State Quiz 6 - MCQExams.com

A crystalline solid
  • changes absorptly from solid to liquid
  • has no definite melting point
  • undergoes deformation of its geometry easily
  • has an irregular 3- dimensional arrangement
  • softens slowly
What is the co-ordination number of Cl‒ in NaCl crystal ?
  • 8
  • 6
  • 4
  • 3
In a solid AB having the NaCl structure, ‘A’ atoms occupy the corners of the cubic unit cell. If all the face-centred atoms along one of the axes are removed, then the resultant stoichiometry of the solid is
  • AB2
  • A2 B
  • A4B3
  • A3B4
A substance AxBy crystallises in a face centred cubic (FCC) lattice in which atoms ‘A’ occupy each corner of the cube and atoms ‘B’ occupy the centres of each face of the cube. Identify the correct composition of the substance AxBy
  • AB3
  • A4B3
  • A3B
  • Composition cannot be Specified
A binary solid (A+B-) has a zinc blende structure with B- ions constituting the lattice and A+ ions occupying 25% tetrahedral holes. The formula of solid is
  • AB
  • A2B
  • AB2
  • AB4
A solid AB has NaCl type structure. If the radius of the cation A is 100 pm, then the radius of the anion B will be
  • 241 pm
  • 414 pm
  • 225 pm
  • 44.4 pm
The ionic radii of Rb+ and I-are 1.46 and 2.16 Å respectively. The most probable type of structure exhibited by it is
  • CsCI type
  • NaCl type
  • ZnS type
  • CaF2 type
The second order Bragg diffraction of X- rays with λ =1.00Å from a set of parallel planes in a metal occurs at an angle of 60o. The distance between the scattering planes in the crystal is
  • 0.575Å
  • 1.00 Å
  • 2.00 Å
  • 1.15Å
The wavelength of X-rays which gives a diffraction angle, 2Ө, equal to 16.80º for a first order diffraction for a crystal with interplanar distance 0.200 nm, is ( given sin 8.4º = 0.146)
  • 0.584 nm
  • 0.1168 nm
  • 0.0292 nm
  • 0.2336 nm
X- rays of wavelength equal to 0.134 nm give a first order diffraction from the surface of a crystal when the value of θ is 10.5º. The distance between the planes in the crystal parallel to the surface is (sin 10.5º = 0.1822)
  • 0.368 nm
  • 0.184 nm
  • 0.726 nm
  • 0.92 nm
If NaCl is doped with 10-3 mol % SrCl2 then the concentration of cation vacancies will be :

  • Chemistry-The Solid State-8589.png
  • 2)
    Chemistry-The Solid State-8590.png

  • Chemistry-The Solid State-8591.png

  • Chemistry-The Solid State-8592.png
A binary solid (A+B-) has a rock salt structure. If the edge length is 400 pm and radius of cation is 75 pm, the radius of anion is
  • 100 pm
  • 125 pm
  • 250 pm
  • 325 pm
A solid X+Y- has a bcc structure. If the distance of closest approach between the two atoms is 173 pm , the edge length of the cell is
  • 200 pm
  • √3/√2 pm
  • 142.2 pm
  • √2 pm
Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be
  • 454 kg m-3
  • 804 kg m-3
  • 852 kg m-3
  • 908 Kg m-3
The number of atoms in 100g of an FCC crystal with density d = 10 gcm-3 and cell edge as 200 pm is equal to

  • Chemistry-The Solid State-8596.png
  • 2)
    Chemistry-The Solid State-8597.png

  • Chemistry-The Solid State-8598.png

  • Chemistry-The Solid State-8599.png
An element (atomic mass = 100 g/ mol) having bcc structure has unit cell edge 400 pm. Then density of the element is
  • 10.376 g/cm3
  • 5.188 g/cm3
  • 7.289 g/cm3
  • 2.144 g/cm3
How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00 g ?
[Atomic masses : Na = 23, Cl=35.5]

  • Chemistry-The Solid State-8602.png
  • 2)
    Chemistry-The Solid State-8603.png

  • Chemistry-The Solid State-8604.png

  • Chemistry-The Solid State-8605.png

Chemistry-The Solid State-8607.png
  • 5.96
  • 5.96 × 10-2
  • 5.96 × 10-1
  • 5.96 × 10-3
The Miller indices of a plane having intercept 2 a, 2b and ∞ are
  • 110
  • 220
  • 100
  • 010
The presence of air bubble in blood stream is dangerous to life because
  • Air combines with blood forming a complex
  • the flow of blood increases manifold due to concentration of surface active substances at the blood- air interface
  • the flow of blood is obstructed due to the concentration of surface active substances at the blood-air interface
  • none of these
In a face centred cubic arrangement of A and B atoms in which A atoms are at the corners of the unit cell and B atoms at the face centres, one of the A atom is missing from one corner in unit cell. The simplest formula of compound is
  • A7B3
  • AB3
  • A7B24
  • A7/8B3
For a cubic system, the interplanar distance, d, is given as :

  • Chemistry-The Solid State-8611.png
  • 2)
    Chemistry-The Solid State-8612.png

  • Chemistry-The Solid State-8613.png

  • Chemistry-The Solid State-8614.png
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