Adjectives that modify a noun by asking a question are called interrogative adjectives.

An interrogative adjective, also known as interrogative determiner, is an adjective that modifies a noun by asking a question. The interrogative adjectives in English are ‘what’, ‘which’, and ‘whose’.

For example:

• Whose book was that?
• Which pen do you like more?
• What books are you buying today?
• Which book on proofreading do you recommend?
• Which team scored the higher in the last match?
• Which player did get a fifty yesterday?
• Whose bag is this?
• Did you find out whose keys those were?
• Do you have any idea which teacher would be accompanying us for the trip?
• What kind of books would you suggest for Learners of Grade 8?