Answer:
(a)
(i) Ferrous Minerals Ferrous minerals contain iron content and are helpful in
the development of metallurgical industries.
Iron ore, chromite, cobalt, etc are the examples of ferrous minerals.
Non-ferrous Minerals These minerals do not contain
iron content and play an important role in a number of industries like,
engineering and electrical industries. Copper, zinc, lead and aluminium are the
examples of non-ferrous minerals.
(ii) Conventional Sources of Energy Conventional
sources of energy have been used since a long time. They are non-renewable and
exhaustible sources of energy. Wood, fuel, coal, petroleum, etc are the
examples of conventional sources of energy.
Non-conventional Sources of Energy The sources of
energy which are of recent origin and have not been commonly used are called
non-conventional sources of energy. These are renewable sources of energy.
Wind, tidal energy solar energy, etc are some of the examples of
non-conventional sources of energy.
(b) A mineral is naturally occurring substance which has
definite chemical composition comprising one or more elements.
Minerals are identified by their physical and chemical
properties.
(c) Minerals in igneous and metamorphic rocks found in the
cracks, crevices and fault. Smaller such occurrence is called veins and larger
are called lodes.
(d) We need to conserve mineral resource because
(i)They are unevenly distributed over the surface of the
Earth.
(ii) They are non-renewable sources of energy.
(iii) They are needed for economic growth and
industrialisation.
(iv) They are limited in supply.
You need to login to perform this action.
You will be redirected in
3 sec