Question

find out about the seven tributaries of the river indus and their old names mentiond in rigveda

Answer 1

There is a verse in Nadistuti sukta of Rigveda , hymn of praise of rivers which mentions the following 10 rivers: Ganga, Yamuna, Saraswati, Sutudri, Parusni, Asikni, Marudvrdha , Vitasta , Arjikiya , Susoma. The Shutudri was Sutlej, Parushni was Ravi, Asikni was Chenab and Vitasta was Jhelum