Question

3. Give appropriate term :-
:) Minerals which contain iron.

ii) A process in which a nucleus is splitted into smaller ones releasing a huge amount of energy.

iii) Electricity generated by movement of water.

iv) Materials required by any industry for the production of goods.

v) The crops cultivated for obtaining fibre.
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Answer 1

Answer:

The minerals goethite, hematite (ferric oxide), lepidocrocite, magnetite (iron oxide) and siderite (iron carbonate) are all mined for iron. The largest concentrations are in iron-rich sedimentary rocks, and such deposits are mined in Russia, Brazil, China, Australia, India and the USA.

Answer 2

i) Magnetite

ii) Nuclear fission

iii) Hydro-electricity

iv) Capital

v) Fiber crops