Number of isomeric compounds with molecular formula \({\mathrm{C}}_{9}{\mathrm{H}}_{10}\mathrm{O}\) which (i) do not dis…

Number of isomeric compounds with molecular formula \({\mathrm{C}}_{9}{\mathrm{H}}_{10}\mathrm{O}\) which (i) do not dissolve in \(\mathrm{NaOH}\) (ii) do not dissolve in \(\mathrm{HCl}\). (iii) do not give orange precipitate with 2 , 4 - DNP (iv) on hydrogenation give identical compound with molecular formula \({\mathrm{C}}_{9}{\mathrm{H}}_{12}\mathrm{O}\) is................
[JEE Main 2023, 1 Feb (Shift 1)]