The total number of refinery working in Assam is/are
A
One
B
Two
C
Three
D
Four
Correct Answer: Four
Digboi Refinery in 1901, Noonmati in Guwahati in 1962, Dhaligaon near Bongaigaon, 1962 Numaligarh, Golaghat district 1999.