Chemistry Class 12 Chapter 1 Quiz: The Solid State
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Questions and Answers

Which type of solid has a definite and regular arrangement of the constituent particles in space?

  • Pseudo solid
  • Super cooled liquid
  • Amorphous solid
  • Crystalline solid (correct)
  • What is a characteristic of amorphous solids?

  • They undergo irregular cleavage when cut (correct)
  • They melt at sharp points
  • They have long order arrangement of particles
  • They have anisotropic physical properties
  • Which type of solid is isotropic in nature?

  • Crystalline solid
  • Pseudo solid
  • Amorphous solid (correct)
  • Super cooled liquid
  • What type of solids are super cooled liquids or pseudo solids?

    <p>Amorphous solids</p> Signup and view all the answers

    Which type of solid has short order arrangement of particles?

    <p>Amorphous solid</p> Signup and view all the answers

    What distinguishes crystalline solids from amorphous solids?

    <p>Sharp melting points</p> Signup and view all the answers

    What is the equation called that relates the path difference, wavelength, distance between atomic planes, and the angle at which interference occurs?

    <p>Bragg's equation</p> Signup and view all the answers

    In a simple or primitive unit cell, where are the particles present?

    <p>At the corners only</p> Signup and view all the answers

    What is the packing fraction for a primitive cubic unit cell?

    <p>0.524 or 52.4%</p> Signup and view all the answers

    How many crystal systems are there based on interfacial angles and axes?

    <p>7</p> Signup and view all the answers

    What does 'PF' represent in the context of crystal unit cells?

    <p>Packing fraction</p> Signup and view all the answers

    What is the name given to the smallest geometrical portion of a crystal lattice that can be used as a repetitive unit to build up the whole crystal?

    <p>Unit cell</p> Signup and view all the answers

    In which type of unit cell are particles present at the corners as well as at the centre of each of six faces?

    <p>Face centred unit cell</p> Signup and view all the answers

    For a face centred cubic unit cell, how do atoms touch each other?

    <p>Along face diagonal</p> Signup and view all the answers

    How are space lattices grouped on the basis of their symmetry?

    <p>Bravais Lattices</p> Signup and view all the answers

    What determines how many atoms touch each other in a unit cell for a given crystal system?

    <p>Atomic packing</p> Signup and view all the answers

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