(b) The correct sequence of the river in descending order of their lengths are Godavari (1465 km), Narmada (1312 km), Mahanadi (858 km) and Tapti (724 km).
(c) West flowing rivers:
Narmada River(1057 km)- Rises in Amarkantak Plateau and flows into gulf of khambat.
Tapti(724 km) - Rises from Betul district in Maharashtra. Luni and Payaswani are also west...