Crystallography MCQ
Crystallography Definition
Crystallography is the experimental science of determining the arrangement of atoms in crystalline solids. The word “crystallography” is derived from the Greek words crystallon “cold drop, frozen drop”, with its meaning extending to all solids with some degree of transparency, and graphein “to write”.
Crystallography MCQ
1. Particles that most effects material properties
(a) Neutrons
(b) Protons
(c) Electrons
(d) Valence electrons
2. Mean distance between atoms in the range of
(a) 25 nm
(b) 2.5 nm
(c) 0.25 nm
(d) 0.025 nm
3. Which one of the following is not a strong bond?
(a) van der Waals bond
(b) Covalent bond
(c) Metallic bond
(d) Ionic bond
4. Bond strength of secondary bonds is in the range of
(a) 1 kJ/mol
(b) 10 kJ/mol
(c) 100 kJ/mol
(d) 1000 kJ/mol
5. Electron sea exists in
(a) Polar bonds
(b) Ionic bond
(c) Covalent bond
(d) Metallic bond
6. Repeatable entity of a crystal structure is known as
(a) Crystal
(b) Lattice
(c) Unit cell
(d) Miller indices
7. Coordination number for closest packed crystal structure
(a) 16
(b) 12
(c) 8
(d) 4
8. Atomic packing factor is
(a) Distance between two adjacent atoms
(b) Projected area fraction of atoms on a plane
(c) Volume fraction of atoms in cell
(d) None
9. Coordination number in simple cubic crystal structure
(a) 1
(b) 2
(c) 3
(d) 4
10. The atomic diameter of an BCC crystal (if a is lattice parameter) is
(a) a
(b) a/2
(c) a/(4/√3)
(d) a/(4/√2)