question_answer

In the reaction sequence\[X\xrightarrow[{}]{Ca{{(OH)}_{2}}}Y\xrightarrow[distillation]{Dry}Actetone\xrightarrow[{{H}_{2}}S{{O}_{4}}]{Conc.}Z;\]X. V and Z are

A) \[C{{H}_{3}}CHO,\] aldol, phorone

B) \[HCOOH,{{(HCOO)}_{2}}Ca,\] mesityl oxide

C) \[C{{H}_{3}}COOH,{{(C{{H}_{3}}COO)}_{2}}Ca,\] mesityl oxide

D) \[C{{H}_{3}}COOH,{{(C{{H}_{3}}COO)}_{2}}Ca,\] pinacol

Correct Answer: C

Solution :

\[\underset{\text{phorone}}{\mathop{\text{CH-}\underset{\begin{smallmatrix}  \text{ }\!\!|\!\!\text{ } \\  \text{C}{{\text{H}}_{\text{3}}} \end{smallmatrix}}{\mathop{\text{C}}}\,\text{=CH-}\overset{\begin{smallmatrix}  \text{O} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{-CH=(C}{{\text{H}}_{\text{3}}}{{\text{)}}_{\text{2}}}}}\,\]