Q. Consider the following statements about Eastern Hills and Mountains:

1. These are part of the Himalayan mountain system having their general alignment from the north to the south direction.
2. In the north, they are known as Patkai Bum, Naga hills, Manipur hills and in the south as Mizo or Lushai hills.
3. Mizoram which is also known as the 'Molassis Basin' is made up of soft unconsolidated deposits.

Which of the above is / are correct?
Answer: All of the above
Notes: These are part of the Himalayan mountain system having their general alignment from the north to the south direction. They are known by different local names. In the north, they are known as Patkai Bum, Naga hills, Manipur hills and in the south as Mizo or Lushai hills. Mizoram which is also known as the 'Molassis Basin' which is made up of soft unconsolidated deposits. Most of the rivers in Nagaland form the tributaries of the Brahmaputra. While two rivers of Mizoram and Manipur are the tributaries of the Barak river, which in turn is the tributary of Meghna; the rivers in the eastern part of Manipur are the tributaries of Chindwin, which in turn is a tributary of the Irrawady of Myanmar.