Base catalysed nucleophilic addition reactions mcqs with answers

Aldehydes and ketones go through the nucleophilic addition reaction with alcohols to give out hemiacetal, which then reacts with another molecule of alcohol to give acetal also known as geminal diethers. Acid catalyst is present to complete the reaction
The nucleophilic addition reaction between hydrogen cyanide (HCN) and carbonyl compounds (generally aldehydes and ketones) results in the formation of cyanohydrins. Base catalysts are often used to increase the rate of the reaction.
Hence, base as a catalyst helps to speed up the reaction. This is because catalysis helps in the generation of cyanide ion (CN) which acts as a stronger nucleophile and adds to carbonyl compounds to produce the corresponding cyanohydrin.