On heating they may become crystalline at certain temperature.

They may become crystalline on keeping for long time.

Amorphous solids can be moulded by heating.

They are anisotropic in nature.

a regular arrangement of constituent particles observed over a short distance in the crystal lattice.

a regular arrangement of constituent particles observed over a long distance in the crystal lattice.

same arrangement of constituent particles in different directions.

different arrangement of constituent particles in different directions.

London forces

dipole-dipole interactions

covalent bonds

coulombic forces

SO2 (Solid)

I2

Diamond

H2O (Ice)

(A) only

(B) Only

(C) and (D)

(B), (C) and (D)