Q. Which Assam district has India's oldest oil refinery at Digboi?
Answer: Tinsukia
Notes: Tinsukia district in Assam hosts the Digboi oil refinery, India's oldest refinery established during British rule. It covers 3,790 km² and was historically part of the Sutiya kingdom. The refinery began production in the early 20th century and is a significant industrial center in the region.
Question Source: 📚This question is part of the Assam General Studies [2000+MCQs] course available only in the GKToday Android App. Download the app here.
📌 Question Number: 133 in Geography of Assam in the above course in App.