Correct Option
The correct option is Banas.
Explanation
The Chambal River is a major tributary of the Yamuna River and forms a significant part of the Peninsular drainage system flowing northwards. Its drainage basin covers parts of Madhya Pradesh, Rajasthan, and Uttar Pradesh. The tributaries of the Chambal generally originate from the Vindhyan ranges in the south and the Aravalli ranges in the west.
Detailed Analysis
- Banas (Correct): The Banas River originates in the Khamnor Hills of the Aravalli Range (near Kumbhalgarh) in the Rajsamand district of Rajasthan. It flows generally east and northeast entirely within Rajasthan before joining the Chambal near Rameshwaram in Sawai Madhopur district. It is the only major tributary of the Chambal that originates from the Aravalli range in the west (left-bank tributary).
- Betwa (Incorrect): The Betwa is a tributary of the Yamuna River, not the Chambal. It originates in the Vindhya Range (Raisen district, Madhya Pradesh) and joins the Yamuna in Hamirpur, Uttar Pradesh.
- Ken (Incorrect): The Ken is a tributary of the Yamuna River. It originates in the Kaimur Range (Ahirwan, Madhya Pradesh) and joins the Yamuna in the Banda district of Uttar Pradesh.
- Sind (Incorrect): The Sind River is a tributary of the Yamuna River. It originates on the Malwa Plateau (Vidisha district, Madhya Pradesh) and joins the Yamuna downstream of the Chambal confluence. (Note: The Kali Sindh is a tributary of the Chambal, but it originates in the Vindhya Range, not the Aravallis).
Key Takeaway: The Banas is the principal left-bank tributary of the Chambal River and is distinct because it originates from the Aravalli Range, whereas the major right-bank tributaries (like Parbati and Kali Sindh) originate from the Vindhyan ranges.