Q36 / 125 · BITSAT 2011 · Chemistry
The reagent (s) which can be used to distinguish acetophenone from benzophenone is (are)
- A2,4 - dinitrophenylhydrazine
- Baqueous solution of $\mathrm{NaHSO}_{3}$
- Cbenedict reagent
- Correct answerD$\mathrm{I}_{2}$ and $\mathrm{NaOH}$
Solution
$\mathrm{I}_{2}$ and $\mathrm{NaOH}$ react with acetophenone $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COCH}_{3}\right)$ to give yellow ppt. of $\mathrm{CHI}_{3}$
but benzophenone $\left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COC}_{6} \mathrm{H}_{5}\right)$ does not
give haloform test.
Hence, the correct answer is option: 'D'.