The reaction shown in the image is called:

$A$ compound has a vapour density of $29$. On warming with an aqueous solution of alkali,it gives a yellow precipitate. The compound is

Which of the products is formed when acetone is reacted with barium hydroxide solution?

In a set of reactions,an acid yielded a product $D$.
$CH_3COOH$ $\xrightarrow{SOCl_2} A$ $\xrightarrow[Anhyd. AlCl_3]{Benzene} B$ $\xrightarrow{HCN} C$ $\xrightarrow{H_3O^+} D$
Identify the product $D$.

The number of molecules which give the haloform test among the following molecules is $.......$.

Which of the following represents the structure of the methyl hemiacetal of formaldehyde?