Question

In which Indian state is Asia's first underground hydroelectric project located?

Hint:

Look for a hilly northern state known for steep rivers and hydroelectric projects built inside the mountain.

Answer 1

Correct answer: Himachal Pradesh
The project referred to here is an early underground power station built in Himachal Pradesh.
An underground hydroelectric project has its power house built inside a cave or tunnel below the ground rather than on the surface.
This design protects the machinery from weather damage and saves surface land in hilly regions.
Himachal Pradesh has many fast flowing rivers coming down from the Himalayas, which makes it suitable for such projects.
Building the power house underground also reduces the risk of damage from landslides, which are common in that terrain.
Because of this early underground design, the project is remembered as the first of its kind in Asia.