Diamond has a tetrahedral structure, whereas graphite has a hexagonal planar structure.

Both physical and chemical properties of diamond and graphite are different.

Graphite is soft, but diamond is hard.

Graphite is a good conductor of electricity, while diamond is not.

lime, silica and sulphur dioxide

lime, silica and carbon dioxide

lime, silica and alumina

lime, silica and boric acid

Hydrogen bonds are present in liquid water.

Water has a high boiling point.

Water has a high heat of fusion.

Water is a non-polar molecule.

caesium

potassium

calcium

magnesium