44th B.P.S.C. (Pre) 2000
Most significant oil refinery of Bihar is -
aSinghbhum
bRudrasagar
cBarauni✓ Correct
dRanchi
Explanation
An oil refinery is located at Barauni in Bihar. At Ranchi, the heavy machinery industry has been set up, and in East Singhbhum, the steel industry has been established.
general-science