You could start by using pH paper to see which ones are acidic. Can you tell us which ones you would expect to be acidic?

Six bottles have been labelled A to F.They contain solutions of silver nitrate,copper sulfate,iron(3) chloride,sodium hydroxide.sodium carbonate and hydrochloridic acid.

Devise a scheme using only these solutions to positively identify each of them.

An alternative is to start with aq. Iron(III) Chloride. It's the yellow solution. Adding aq FeCl₃ to a sample of the other solution produces varying results. White precipitate will be formed with aq. silver nitrate. Brown precipitate will be formed with aq. NaOH. Brown precipitate and effervescence of a colourless odourless gas will be formed with aq. sodium carbonate. Aqueous Copper(II) Sulphate can be identified by its blue color. The colourless solution that produce no visible change with aq. Iron(III) chloride is hydrochloric acid. Adding it to aq. Sodium Carbonate will produce effervescence of a colourless odourless gas without formation of any precipitate.