Multipurpose projects were installed by Pandit Jawaharlal Nehru to

1. supply water to cities and for power generation
2. for navigation
3. for economic development
4. to avoid silting in the river

Hirakud dam was constructed mainly

1. for irrigation
2. to control floods
3. to supply water for domestic use
4. to store water

Solar energy is

1. in-exhaustible
2. non-renewable
3. non affordable
4. more useful in temperate zone

Identify the type of energy used in the given picture

1. wind energy
2. solar energy
3. biomass energy
4. tidal power