Which of the following functional group pairs corresponds to those constituting a hemiaminal?

W) Thiol [THY-oI] and nitrile [NY-tril]

X) Halogen and alkyl [AL-kuhl]

Y) Amine [uh-MEEN] and hydroxyl

Z) Azide and alkoxy [AL-tok-see]
Y) AMINE AND HYDROXYL