The CN― adds to the carbonyl carbon to form a cyanohydrin attached to a benzyl group.

Substituents at adjacent carbon atoms to ketone are responsible for stearic hindrance so the attack of cyanide ion at ketonic carbon is almost impossible.

methyl acetate is also known as methyl ethanoate which is an ester. hydrolysis of ester will results in carboxylic acid and alcohol. this is an reversible reaction methyl acetate is also known as methyl ethanoate which is an ester. hydrolysis of ester will results in carboxylic acid and alcohol. this is an reversible reaction

Normal reaction happens when the reaction is normal. Abnormal reaction happens when the reaction is abnormal.

It would be a catabolic reaction or decomposition reaction.