Koyali oil refinery is located in which of the following states?

In which of the following State of India 'Koyali' petroleum refinery is located?

Which one of the following Oil Refineries is not located in Assam ?

The Noonmati Oil refinery is located in the State of

Which one among the following is NOT a major oil field located in Gujarat?

Where is Tatipaka oil refinery located?