The river draining into Arabian Sea:

Mahi / माही

The Banas river joins Chambal at which place?

Rameshwar

River basins descending by drainage area: Chambal, Mahi, Banganga, Sabarmati

(a),(b),(c),(d)

Match rivers-tributaries: Banas-Menali, Mahi-Panam, Luni-Jojari, Sabarmati-Wakal

a-II,b-IV,c-I,d-III

River basins descending drainage: Chambal > Banas > Luni > Sabarmati

b,d,c,a

Tributaries of Luni: Bandi, Jojari, Sukari (not Mahi)

a,b,d

Match rivers-sources: Chambal-Mhow, Luni-Pushkar/Aravalli, Banas-Khamnor, Banganga-Bairath/Jaipur

a-II,b-III,c-IV,d-I