Choose the appropriate technique below for separating these mixtures into their constituents. (Diffusion, Solvent Extraction, Chromatography, Sublimation, Fractional Distillation and Distillation.
I. Solid iodine and solid calcium carbonate
II. Pigments extracted from the bark of a tree
III. Solid sodium chloride and solid sulphur
IV. Water and propanol
V. Liquid
VI. Solid sodium carbonate and solid calcium
VII. Gaseous hydrogen and gaseous sulphur (iv) oxide.