Which of the following compounds gives the iodoform test?

Given below are two statements:
Statement $I$ : Acidity of $\alpha$-hydrogens of aldehydes and ketones is responsible for Aldol reaction.
Statement $II$ : Reaction between benzaldehyde and ethanal will $NOT$ give Cross-$Aldol$ product.
In the light of above statements,choose the most appropriate answer from the options given below.

In the given transformation,which of the following is the most appropriate reagent?

The reagent that can distinguish benzaldehyde from propionaldehyde is

Identify the major product $(P)$ in the given reaction of propanal with dilute $NaOH$ followed by heating.

The addition of $HCN$ to carbonyl compounds is an example of