Compound $\text{'}\mathrm{Y}\text{'}$ (molar mass $=88.12 \mathrm{g} {\mathrm{mol}}^{-1}$) containing $54.52\%$ carbon, $9.17\%$ hydrogen and $36.31\%$ oxygen gives a reddish-brown precipitate in Fehling's test. $\text{'}\mathrm{Y}\text{'}$ is?

The reagent $\mathrm{A}$ which can be used for the above conversion is

Which of the following will undergo base catalysed condensation reaction with cyclopentadiene to form this compound?

In the above reaction sequence, the product $\mathrm{C}$ is

Predict the compound $\mathrm{C}$ in the following series of reactions.

${\mathrm{CH}}_3\mathrm{COOH}\stackrel{{\mathrm{PCl}}_5}{\to }\left[\mathrm{A}\right]\underset{\mathrm{Anhydrous} {\mathrm{AlCl}}_3}{\overset{{\mathrm{C}}_6{\mathrm{H}}_6}{\to }}\left[\mathrm{B}\right]\stackrel{{\mathrm{CH}}_3\mathrm{MgBr}}{\to }\left[\mathrm{C}\right]$