Question -
Answer -
a. Ferrous and non-ferrous minerals
b. Conventional and non-conventional sources of energy
Answer:
a. Ferrous minerals are the metallic minerals containing iron. For e.g.- Iron ore, Manganese, Nickel, Cobalt etc.
While non-ferrous minerals are also metallic, but they do not contain iron. For e.g.- Manganese, Nickel, Cobalt etc.
b. Conventional sources of energy include firewood, cattle dung cake, coal, petroleum, natural gas and electricity (both hydel and thermal).
While non-conventional sources of energy are solar, wind, tidal, geothermal, biogas and atomic energy.