1. WH- Questions are used when we want to obtain information.
Below are examples of WH- Questions and their uses.
WH Question Uses
What, Which - for things and people
Examples:
What is your name?
Which one of these gentlemen is your father?
Who, Whom - for people
Examples:
Who is the headmaster of this school?
Whom did you see at the park yesterday?

2. Whose - to show possession
Examples:
Whose house is that?
Whose coat is hanging behind the door?
When - for time
Examples:
When are you coming to my house?
When is your birthday?
Where - for place and position
Examples:
Where is the bank situated?
Where do you live?

3. Why - for reason
Examples:
Why did you leave me here?
Why is the girl crying?