Question

Examine the following statements and select the correct option. :

Statement 'A': Himalayan rivers cross many Himalayan ranges and the Shivalik Hills and enter into the plain area.

Statement 'B': Peninsular rivers flow through the rift valleys created by faults. 

1. Statements 'A' and 'B' both are correct
2. Statements 'A' and 'B' both are incorrect 
3. Statement 'A' is correct but statement 'B' is incorrect 
4. Statement 'A' is incorrect but statement 'B' is correct

Answer 1

Correct Answer - Option 3 : Statement 'A' is correct but statement 'B' is incorrect 

Statement 'A' is correct but statement 'B' is incorrect.

• Only the Narmada, the Tapti, and the Mahi rivers run from east to west and flow in a rift valley. Hence statement B is incorrect

• Himalayan rivers cross many Himalayan ranges and the Shivalik Hills and enter into the plain area. ​Hence statements A is correct.

• Shiwalik Range
  • Also known as Outer Himalayas.
  • Located in between the Great Plains and Lesser Himalayas.
  • The altitude varies from 600 to 1500 meters.
  • It has a length of about 2,400 km from the Potwar Plateau to the Brahmaputra valley.
  • The southern slopes are steep while the northern slopes are gentle.
• Peninsular river
  • The Peninsular drainage system is older than the Himalayan one.
  • This is evident from the broad, largely-graded shallow valleys, and the maturity of the rivers.
  • The Narmada and the Tapi are the peninsular rivers that flow through a rift valley.
  • Most of the major Peninsular Rivers except Narmada and Tapi flow from west to east. 
  • Hence statements B is incorrect.
  • Mahanadi, Godavari, Tungabhadra, Kaveri in the Deccan the
    gradient flows from West at the height of Western Ghats to the East into the Bay of Bengal.
• The geological faults (rifts) created between two ancient mountain ranges, ‘Vindhya’ & ‘Satpura’, when the Indian plate moved into the Eurasian plate.
  • They arise in the Chota Nagpur plateau in the east of the Deccan peninsula and from there, the gradient is down towards the Arabian Sea in the West; that is why they travel from the east to the west.  
  • These faults run parallel to the Vindhyas and the Satpuras.