56th to 59th B.P.S.C. (Pre) 2015
The oldest oil field in India is –
aBombay High, Maharashtra
bAnkleshwar, Gujarat
cNavgam, Gujarat
dDigboi, Assam✓ Correct
Explanation
The oldest oilfield in India is located at Digboi in Assam. It lies in the Brahmaputra Valley, which is the oldest petroleum-producing region of the country.
general-geography