Crystal Structure & Material Properties Quiz

Which of the following has the highest atomic packing factor (APF)?

• BCC

• FCC

• HCP

• Simple Cubic

Coordination number of atoms in a BCC structure is:

• 6

• 8

• 12

• 4

A Schottky defect is generally found in:

• Metals

• Ionic solids

• Covalent crystals

• Molecular solids

Edge dislocation is characterized by:

• Burgers vector parallel to dislocation line

• Burgers vector perpendicular to dislocation line

• Screw type behavior

• Point defect

Vacancy diffusion rate is highest in:

• Covalent crystals

• Ionic solids

• Metals

• Ceramics

The number of atoms per unit cell in FCC is:

• 1

• 2

• 4

• 8

HCP structure has how many atoms per unit cell?

• 4

• 6

• 8

• 12

Which of the following does not exhibit polymorphism?

• Silica

• Iron

• Aluminum

• Carbon

The Miller indices of a plane which cuts the X, Y, and Z axes at 1, 2, and 3 units respectively are:

• (1 2 3)

• (3 2 1)

• (6 3 2)

• (3 6 2)

Which crystal system has all sides unequal and all angles unequal (≠ 90°)?

• Cubic

• Tetragonal

• Triclinic

• Orthorhombic