The reaction $Ph-CDO \xrightarrow{50\% \text{ aq. } NaOH, \text{ warm}} Ph-COO^- + \text{an alcohol}$. This alcohol is:

When acetaldehyde is heated with Fehling solution,a red precipitate is formed. Which of the following is that?

The major aromatic product $C$ in the following reaction sequence will be :

Compound $(A)$ with molecular formula $C_{11}H_8O$ does not undergo self-aldol condensation. Upon ozonolysis,it yields $Ph-CHO$ and $2B$,where $B$ on oxidation with $Ag^{+}$ gives oxalic acid. Identify compound $(A)$.

You have two $C_6H_{10}O$ ketones,$I$ and $II$. Both are optically active,but $I$ is racemized by treatment with acid and $II$ is not. Wolff-Kishner reduction of both ketones gives the same achiral hydrocarbon,formula $C_6H_{12}$. What reasonable structures may be assigned to $I$ and $II$ respectively?

What is the characteristic odor of nitrobenzene?