Chemistry - Carbonyl compounds Question with Solution | TestHub

Compound$\mathrm{A}\left({\mathrm{C}}_9{\mathrm{H}}_{10}\mathrm{O}\right)$shows positive iodoform test. Oxidation of A with$\mathrm{K}\mathrm{M}\mathrm{n}{\mathrm{O}}_4/\mathrm{K}\mathrm{O}\mathrm{H}$gives acid$\mathrm{B}\left({\mathrm{C}}_8{\mathrm{H}}_6{\mathrm{O}}_4\right)$. Anhydride of B is used for the preparation of phenolphthalein. Compound A is: