1. Brahmaputra is the widest river in India.

2. The Brahmaputra River originates as Siang or Dihang from the Chemayungdung glacier of the Kailash range near Lake Manasarovar.

3. It enters India from the west of Sadiya town in Arunachal Pradesh.

Tributaries: Dibang, Lohit, Siang, Budhi Dihing, Tista and Dhansiri.

4. The average width of the Brahmaputra valley is about 80 kilometres.

5. The main river of the valley, the Brahmaputra is one of the largest rivers in the world and ranks fifth in terms of its average runoff.

6. Namcha Barwa is a mountain peak in the Tibetan Himalayas with an altitude of 7757 meters. Tsangpo - The Brahmaputra river takes a U-turn on reaching Namcha Barwa and enters India in Arunachal Pradesh through a narrow valley.

7. The Himalayas extend in the east-west direction from the Indus Valley in the west to the Brahmaputra Valley in the east.

The Rawatbhata Nuclear Power Plant is located in Rawatbhata, a town in the Chittorgarh district of the Indian state of Rajasthan. It is a complex that houses several nuclear reactors, including pressurized heavy water reactors (PHWR) and pressurized heavy water reactors of the Indian design. The plant plays a significant role in contributing to the electricity generation capacity of the region and the country.

Answer: A) Supervisor's wages Explanation: The prime cost calculates the use of raw materials and direct labor, but does not factor in indirect expenses, such as advertising and administrative costs. Supervisor's wages doesn;t come under prime cost.