Is "what" an interrogative pronoun

[vinodhiniranganathan14]

Hi

I am currently studying the MGMAT Foundations of GMAT Verbal 5th Edition.
In the chapter on Pronouns, "What" was not in the list of interrogative pronouns.
Can you throw some light on the usage of "what"as a pronoun .

Thanks

[RonPurewal]

hi,
the MPrep materials have their own folder on this forum; please post your question in that folder. thank you.