Under which one of the following rivers has India's first underwater metro rail tunnel been constructed?
- A.Yamuna
- B.Ganga
- C.Hooghly
- D.Gomti
Show answer
India's first underwater metro tunnel runs beneath the Hooghly river in Kolkata. It is part of the East-West Metro corridor (the Green Line) of Kolkata Metro and joins Howrah on the west bank with Kolkata on the east bank.
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