The main raw materials for generation of atomic energy

1. uranium and plutonium
2. coal and non-ore
3. manganese and copper
4. copper and bauxite

Solar energy is

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

Largest coal field in India

1. Digboi
2. Ranigunj
3. Jharia
4. Bombay High

How is energy obtained?