Q1 of 11 Page 63

Which one of the following minerals is formed by decomposition of rocks, leaving a residual mass of weathered materials?

Bauxite is formed after the decomposition of surface rocks. The soluble constituent within rocks evaporates and what is left behind as residue is the ore of Bauxite from which then Aluminium is extracted.

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1

Koderma, in Jharkhand is the leading producer of which one of the following minerals?

 1

Minerals are deposited and accumulated in the strata of which of the following rocks?

 1

Which one of the following minerals is contained, in the Monazite sand?

 2

Answer the following questions in about 30 words:

Distinguish between the following in not more than 30 words.


(a) ferrous and non-ferrous minerals.


(b) conventional and non-conventional sources of energy