India's oldest oilfield and oldest refinery are located at:
- A.Digboi in Assam
- B.Ankleshwar in Gujarat
- C.Mumbai High off the Maharashtra coast
- D.Barauni in Bihar
Show answer
Oil was struck at Digboi in the upper Assam valley in the nineteenth century, the first successful well in India, and the refinery built beside it is the oldest working refinery in the country.
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