The Patkai hills are located in which of the following?

The correct answer is Purvachal . Key Points The Patkai hills are a series of mountain ranges located in the northeastern part of India , forming a significant portion of the Purvachal or Eastern Hills . These hills are situated along the international boundary between India and Myanmar , extending across states such as Arunachal Pradesh , Nagaland , and Manipur . Geologically, the Patkai Bum is composed of strong sandstones and sedimentary rocks that were uplifted during the same tectonic events that formed the main Himalayan range . Unlike the main Himalayas which run West-to-East, the Purvachal hills trend in a North-South direction and are characterized by parallel ranges and narrow valleys . The region is known for its dense forest cover , high biodiversity , and conical peaks , acting as a natural barrier between the Assam valley and the Chindwin River basin. Additional Information Nepal Himalayas : This section of the Himalayas lies between the Kali River and the Teesta River . It contains the highest peaks in the world, including Mount Everest , Kanchenjunga , Lhotse , and Makalu . Assam Himalayas : This range is located between the Teesta River and the Dihang River (Brahmaputra). It covers parts of Sikkim , Arunachal Pradesh , and the kingdom of Bhutan . Himachal : Also known as the Lesser Himalayas or Middle Himalayas , this range is located between the Himadri (Great Himalayas) and the Shiwaliks . The average altitude ranges between 3,700 and 4,500 meters , featuring famous ranges like the Pir Panjal and Dhauladhar .