What is Kinds of titration?

In a direct titration the titrant reacts with the analyte itself. In a back titration a known excess of a reagent is added to the analyte, and the excess left is titrated. When a solution contains several analytes that react in turn with the titrant, they are measured by successive titrations, one equivalence after another; when they react together and give a single equivalence, by a simultaneous titration, which gives only their sum.