Ferrous salts are usually __________ while ferric salts are generally __________.

Add dilute NaOH to Zn2+ aqueous solution, a white gelatinous precipitate, __________ is given.

Addition a hydrogen sulfide gas (H2S) to aqueous Zn2+ in a basic medium will a white precipitate, __________.

What does the color of the residue tell us about the salt?

Group reagent for the precipitation of group II basic radicals for the qualitative analysis table is

When the lead ion solution is mixed with Potassium chromate, the colour is mixture is

When the lead ion solution is mixed with Potassium iodide, the colour is mixture is

When the copper ion solution is mixed with Potassium ferrocyanide, the colour is mixture is

 H2S will precipitate the sulphide of the metal from the solution of chlorides of Cu, if

__________ is water-fearing while __________ water-loving.