what
چی (chi)
how much/many
چند (chand)
who
کی (ki)
where
کجا (kuja)
what/which
کدام (kodam)
how (4 terms)
چطور (chitor) / چگونه (chigona) / چیقسم (cheqesm) / چی رقم (chi raqam)
how many of (two terms)
چند تا (chand ta) / چند دانه (chand dana)
why (it can also be an affirmative response to a negative question)
چرا (chara/chera)