question_answer

\[(Q)\xrightarrow[^{\Delta }]{EOH}Ph-C{{H}_{2}}-OH+Ph-C{{O}_{2}}\]

\[(R)\xrightarrow{{{O}_{3}}}P+Q\], Structure of(R) is:

A) \[Ph-CH=CH-C{{H}_{3}}\]

B)

C) \[Ph-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=CH-C{{H}_{3}}\]

D) \[Ph-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\]

Correct Answer: B

Solution :

[b]         \[\underset{(Q)}{\mathop{Ph-CHO}}\,\underset{(Cannizzaro)}{\mathop{\xrightarrow[^{\Delta }]{KOH}}}\,PhC{{H}_{2}}OH+PhCO{{O}^{-}}\]