Question

Which of these can be considered as disadvantages of hydropower generation?

• A. Dams can be constructed only in limited areas.
• B. Submerged vegetation rots under anaerobic conditions and produce methane, a green house gas.
• C. It generates smoke.
• D. Large areas of land get submerged within water when dams are erected.

Answer 1

Answer: (A), (B), (D)

The correct options are
A Dams can be constructed only in limited areas.
B Submerged vegetation rots under anaerobic conditions and produce methane, a green house gas.
D Large areas of land get submerged within water when dams are erected.

Disadvantages of hydro power generation are:-

1. High investment costs
2. Submerged vegetation rots under anaerobic conditions and produces methane, a green house gas.
3. Sometimes messes up wildlife.
4. Loss of fish species
5. Change in river or stream quality
6. Large areas of land get submerged within water when dams are erected.
7.Dams can be constructed only in limited areas.