Hydrolysis of an ester gives a carboxylic acid, which on Kolbe's electrolysis yields ethane. The ester is _______.

Which of the following reaction is used for the preparation of $\text{α}$-Bromoacetic acid?

The carboxylic acid which shows reducing property is _______.

Predict the product $\text{'}\mathrm{B}\text{'}$ in the sequence of reaction, $\text{HC≡CH}\underset{{\text{HgSO}}_{\text{4}}}{\overset{{\text{30\% H}}_{\text{2}}{\text{SO}}_{\text{4}}}{\to }}\text{A }\stackrel{\text{NaOH}}{\to }\text{B}$.

In which of the following reactions does propanone give propane?

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is _______.

Which of the following has the most acidic hydrogen? 

Which of the following is optically active?

Which of the reagent gets added across the double bond of acetaldehyde?