ka:- ka/

ka is often followed by the particles iva, u, nAma, nu, vA, svid, some of which serve merely to generalize the interrogation (e.g. kim iva etad, what can this be? ka u Sravat, who can possibly hear? ko nAma jAnAti, who indeed knows? ko nvayam, who, pray, is this? kiM nu kAryam, what is to be done? ko vA devAd anyaH, who possibly other than a god? kasya svid hfdayaM nAsti, of what person is there no heart?)