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Aldehydes Ketones and Carboxylic Acids question

2023 · 30 Jan · Shift 1 · Q19
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Aldehydes Ketones and Carboxylic Acids question

2023 · 30 Jan · Shift 1 · Q19

JEE MainChemistryAldehydes Ketones and Carboxylic AcidsNumerical+4 / −1
A trisubstituted compound 'A\mathrm{A}A', C10H12O2\mathrm{C}_{10} \mathrm{H}_{12} \mathrm{O}_{2}C10​H12​O2​ gives neutral FeCl3\mathrm{FeCl}_{3}FeCl3​ test positive. Treatment of compound 'A' with NaOH\mathrm{NaOH}NaOH and CH3Br\mathrm{CH}_{3} \mathrm{Br}CH3​Br gives C11H14O2\mathrm{C}_{11} \mathrm{H}_{14} \mathrm{O}_{2}C11​H14​O2​, with hydroiodic acid gives methyl iodide and with hot conc. NaOH\mathrm{NaOH}NaOH gives a compound B,C10H12O2\mathrm{B}, \mathrm{C}_{10} \mathrm{H}_{12} \mathrm{O}_{2}B,C10​H12​O2​. Compound 'A' also decolorises alkaline KMnO4\mathrm{KMnO}_{4}KMnO4​. The number of π\piπ bond/s present in the compound 'A\mathrm{A}A' is ‾\underline{\hspace{2cm}}​.
Numerical answer
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