Acetaldehyde reacts with $Cl_2$ (in excess) to give

$CH_3CHO + HCN$ $\xrightarrow{\text{H}^+} CH_3CH(OH)CN$ $\xrightarrow{\text{H}_3\text{O}^+} CH_3CH(OH)COOH$. In the above reaction,a chiral center is generated. What will be the nature of the resulting acid?

The major product of the following reaction is:

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

Arrange the following in increasing order of their acidic strength:

Acetals are