A kind of Asatyāmṛṣā (Vyavahāra) Bhāṣā (speech which is neither truth nor a lie-speech for pragmatic purposes);
the interrogative speech or statement made for getting information about unknown or ambiguous subject.
prcchanī avijnātasya sandigdhasya kasyacidarthasya parijnāñāya tadvidaḥ pārśve codanā.
(Prajñā 11.37 Vṛ pa 259)