For the preparation of `1`-phenylethanol from benzaldehyde,which of the following reagents is useful ?

Gabriel phthalimide synthesis is used in the preparation of primary amine from phthalimide. Which of the following reagents is not used during the process?

In order to prepare fluorobenzene from benzene diazonium chloride which of the following reagent is used

Cinnamic acid from benzaldehyde would be prepared by which of the following reaction

Name the reagent used to convert toluene to benzaldehyde.