An example of crystalline solid is --------

• rubber

• plastic

• gel

• graphite

Graphite is an example of -------- solid

• ionic

• covalent

• molecular

• metallic

In ----- crystal system,  $\alpha\ne\beta\ne\gamma\ne90\degree$   and  $a\ne b\ne c\ne$  

• Cubic

• hexagonal

• triclinic

• tetragonal

Bravais lattices possible for orthorhombic system are----

• Simple, FC, BC

• Simple, FC, BC, EC

• Simple

• Simple, BC

Number of atoms per unit cell in FCC lattice is -----

• 1

• 2

• 3

• 4

An example of molecular crystal is -----

• NaCl

• Graphite

• ice

• Gold

Total number of Bravais lattices possible for Crystal system is

• 7

• 14

• 32

• 230

---------- is the Nobel prize winner for diffraction of X-rays in 1914

An intersection of two adjacent faces is called as ------

The arrangement of atoms in different sites in 3D space is called --------