Q. Consider the following statements about Arunachal Himalayas:

1. These extend from the east of the Bhutan Himalayas up to the Diphu pass in the east.
2. The general direction of the mountain range is from southwest to northeast.
3. These ranges are dissected by fast-flowing rivers from the north to the south, forming deep gorges.
4. An important aspect of the Arunachal Himalayas is the numerous ethnic tribal community.
5. Due to rugged topography, most of the interactions are carried through the duar region along the Arunachal-Assam border.

Which of the above is / are correct?
Answer: All of the above
Notes: These extend from the east of the Bhutan Himalayas up to the Diphu pass in the east. The general direction of the mountain range is from southwest to northeast. Some of the important mountain peaks of the region are Kangtu and Namcha Barwa. These ranges are dissected by fast-flowing rivers from the north to the south, forming deep gorges. Brahmaputra flows through a deep gorge after crossing Namcha Barwa. Some of the important rivers are the Kameng, the Subansiri, the Dihang, the Dibang and the Lohit. These are perennial with a high rate of fall, thus, having the highest hydroeclectric power potential in the country. An important aspect of the Arunachal Himalayas is the numerous ethnic tribal community inhabiting in these areas. Some of the prominent ones from west to east are the Monpa, the Abor, the Mishmi, the Nyishi and the Nagas. Most of these communities practise jhumming. It is also known as shifting or ‘slash and burn’ cultivation. Due to rugged topography, the inter-valley transportation linkages are nominal. Hence, most of the interactions are carried through the duar region along the Arunachal-Assam border.