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

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

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

The Noonmati Oil refinery is located in the State of

Which is the oil refinery having maximum capacity in India ?

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