The correct option is
A-2, B-4, C-1, D-3
Explanation
The drainage system of India is broadly divided into two major groups based on the orientation of discharge: the Arabian Sea drainage (rivers flowing west) and the Bay of Bengal drainage (rivers flowing east). The primary water divide is formed by the Western Ghats, the Aravallis, and the Delhi Ridge.Statement-wise Analysis
A. Indus (Matches with Arabian Sea)
- The Indus is a major Himalayan river that originates near Lake Mansarovar in Tibet.
- It flows northwest through Ladakh and Baltistan, enters Pakistan, and finally flows southwards to discharge into the Arabian Sea (east of Karachi).
- In the given list, it corresponds to an Arabian Sea destination (mapped to 2).
B. Godavari (Matches with Bay of Bengal)
- The Godavari is the largest Peninsular river, originating from Trimbakeshwar in the Nashik district of Maharashtra.
- It flows eastwards across the Deccan Plateau and drains into the Bay of Bengal.
- In the given list, it corresponds to a Bay of Bengal destination (mapped to 4).
C. Narmada (Matches with Arabian Sea)
- The Narmada originates from the Amarkantak plateau in Madhya Pradesh.
- Unlike most peninsular rivers, it flows westwards through a rift valley between the Vindhya and Satpura ranges.
- It drains into the Arabian Sea via the Gulf of Khambhat.
- In the given list, it corresponds to an Arabian Sea destination (mapped to 1).
D. Mahanadi (Matches with Bay of Bengal)
- The Mahanadi rises in the highlands of Chhattisgarh.
- It flows through Odisha to discharge into the Bay of Bengal.
- In the given list, it corresponds to a Bay of Bengal destination (mapped to 3).
Key Takeaway
- West-Flowing Rivers (Arabian Sea): Indus, Narmada, Tapi, Sabarmati, Mahi, Periyar.
- East-Flowing Rivers (Bay of Bengal): Ganga, Brahmaputra, Mahanadi, Godavari, Krishna, Kaveri.
- The Narmada and Tapi are exceptions in the Peninsular system as they flow west through rift valleys.