Who - is used for person
e.g. Who is your friend?
When - is use for asking time
e.g. When does the movie start?
Where - is used to ask the place
e.g. Where do you live?
Why - is usedto ask the reason
e.g. Why were you late for the party?
Whose - is used to show possession
e.g. Whose bag is this?
Read full article
