If Phenyl magnesium bromide and acetaldehyde are reactants, product formed after hydrolysis would be
As we learnt in
Reaction of Grignard reagent with aldehyde -
With methanol yields primary alcohol, with all other aldehydes produces secondary alcohols
Reaction of aldehyde (acetaldehyde) with grignard reagent (phenyl magnesium bromide) yields alcohol after hydrolysis.