9. Interrogative Pronouns as Adjectives - what, whose, which

Interrogative Pronouns are also used as adjectives. In the sentence, Which home did you buy? The word which asks the question but also modifies the noun home. See the following how the pronouns are used to ask the question:

What magazine did you read? (modifies magazine)
Whose car did you use? (modifies car)
Which movie did you like best? (modifies movie)