What is the final product obtained by the reduction of acetaldehyde with sodium and alcohol?

In the reaction sequence,
the major products $X$ and $Y$ respectively are

The major product $(Z)$ of the following chemical reaction is

Arrange the following compounds in the correct order of their reactivity towards nucleophilic addition reactions:
$I: CH_3CHO$
$II: CH_3CONH_2$
$III: HCHO$
$IV: CH_3COCH_3$

The reaction shown above is a Baeyer-Villiger rearrangement of an asymmetric ketone with magnesium monoperoxyphthalate hexahydrate (in the drawing,$Mg^{+2}$ is omitted for clarity). Identify the major product.

Which of the following does not give a yellow solid on treatment with sodium hypoiodite?