UGC NET Questions (Paper – 1)

Kevalavyatireki inference draws on a vyapti known only through joint absence of hetu and sadhya; there is no case in which both are present together that can be cited. The relation is captured purely by statements like “wherever there is no sadhya, there is no hetu.” Nyaya treats such reasoning as a special pattern where negative concomitance does all the justificatory work. Thus the inference described in the stem is kevalavyatireki.

Option A:
Option A is correct because kevalavyatireki literally means “only by negative concomitance,” matching the condition that the relation is confirmed through absences alone.

Option B:
Option B, kevalanvayi, is based solely on positive instances of joint presence and therefore stands in contrast to the pattern specified in the question.

Option C:
Option C, anvayavyatireki, uses both joint presence and joint absence, relying on a richer set of instances than the purely negative case.

Option D:
Option D, purvavat, classifies inference according to temporal cause–effect direction rather than by the positive or negative character of vyapti instances.