Question:

India's first underwater metro rail tunnel has been constructed under which river?

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This tunnel connects the cities of Kolkata and Howrah, dramatically reducing transit time for thousands of daily commuters.
Updated On: Jun 5, 2026
  • Yamuna
  • Ganga
  • Hooghly
  • Gomti
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The Correct Option is C

Solution and Explanation

Concept: Underwater tunnels represent a significant engineering feat, necessitating advanced structural protection against high water pressure and sediment conditions.

Step 1: Locating the project site.
The underwater metro project is part of the Kolkata Metro network, designed to provide seamless connectivity across the river dividing the metropolitan area.

Step 2: Identifying the specific waterway.
The tunnel was engineered and constructed beneath the Hooghly River, making it the first of its kind in India. equation River for India's first underwater metro = Hooghly equation center Hooghly center
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