Minerals and Energy Resources CBSE Class 10 SST Geography .
WEBMar 13, 2023 · It is generally formed when the beds of coal are subject to extreme pressure and heat to the earth movements. ... It is used for manufacturing machines and tools. India has about 20% of the world reserves of iron ore. ... Solution: Solar energy, wind power, biogas and geothermal energy are nonconventional energy resources. Question21 .