The correct answer is: c) Dibrugarh.
The Numaligarh Refinery Limited (NRL) is an oil refinery located in Numaligarh, Dibrugarh district, Assam, India. It is the first public sector refinery in the northeastern region of India. The refinery was commissioned in 1994 and has a capacity of 3 million tonnes per annum (MTPA). It is owned by the Government of India and is operated by Numaligarh Refinery Limited (NRL).
The refinery is located on the banks of the Brahmaputra River, about 200 km from Guwahati. It is well-connected by road and rail to the rest of the country. The refinery has a jetty on the Brahmaputra River, which is used to import crude oil.
The refinery produces a variety of products, including gasoline, diesel, kerosene, LPG, and naphtha. It also produces bitumen, sulphur, and other products. The refinery is a major source of employment in the region and contributes significantly to the economy of Assam.
The other options are incorrect because:
- Dhubri is a district in Assam, India. It is located on the banks of the Brahmaputra River, about 300 km from Guwahati.
- Golaghat is a district in Assam, India. It is located on the banks of the Brahmaputra River, about 250 km from Guwahati.
- Bongaigaon is a district in Assam, India. It is located on the banks of the Brahmaputra River, about 400 km from Guwahati.