What are interrogative adjectives? They are: whose, what, which, where, why and how. They modify or qualify nouns and are used for interrogation.
Whose; indicates a possessive.
Whose bag is that sitting in the corridor?
I don’t know whose friend is sitting outside?
What; question word asking for general information
What is your name?
What school do you go to?
Which; used for specifying
Which pen would you prefer, the blue or the red one?
Which is the smallest country in the world?
Which option works best for you?
Where; used to indicate a direction
Where do you go to college?
Where is James? I haven’t seen him all day.
Where does Anne live?
Why; general question word that seeks an explanation
Why don’t cats and dogs always get along?
Why are you acting this way?
Why is Peter coming so early?
How; seeks the manner as to how something was done.
How does Maria know about the divorce?
How does the political situation work in your country?
How can we make sure this doesn’t happen again?