Definition Of Interrogative Adjective:
Interrogative Adjectives are used with nouns to ask questions.

These words are called interrogative determiners or interrrogative adjectives.

Examples Of Interrogative Adjective.

What color is her hair?
Whose car is this?
Which road leads to the zoo?
Whome do you want to meet?
Whose shop is closed?

Learning Competency

Modal auxiliaries Vs Primary auxiliaries
Primary auxiliaries are be, do, have. They are used to form tenses and to frame short answers.
Modal auxiliaries are will, would, may, might, shall, should, can, could, must, dare, need, used, ought. They are used to express moods.