Examveda
Examveda

The main mineral found in upper Brahmaputra valley is

A. Coal

B. Iron are

C. Petroleum

D. Manganese

Answer: Option C

Solution(By Examveda Team)

Main mineral found in upper Brahmaputra valley is petroleum. British in 1901 started extracting petroleum in Digboi district of Assam. It is oldest petroleum refinery in India.

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