B.P.S.C. (Pre) 2018
Which one of the following parts of Bihar is geologically older in age relatively?
aRohtas Plateau
bNorth-Western Hills
cKharagpur Hills✓ Correct
dNorth Ganga Plains
eNone of the above/More than one of the above
Explanation
The Kharagpur Hills consist of Pre-Cambrian/Proterozoic rocks of the Munger–Rajgir range, whereas the Rohtas Plateau belongs to the Vindhyan sequence; the North-Western Hills are a part of the Shivalik Himalaya (Upper Tertiary to Early Quaternary), and the North Ganga Plain is the newest.
general-geography