Koderma, in Jharkhand is the leading producer of which one of the following minerals?
Bauxite
Mica
Iron-ore
Copper
B.
Mica
Minerals are deposited and accumulated in the stratas of which of the following rocks?
Sedimentary rocks
Metamorphic rocks
Igneous rocks
None of the above
A.
Sedimentary rocks
Distinguish between the following in not more than 30 words.
Ferrous and Non-ferrous minerals.
Ferrous Minerals:
(i)Ferrous minerals account for about threefourths of the total value of the production of metallic minerals.
(ii)They provide a strong base for the development of metallurgical industries.
Non-ferrous Minerals:
(i)India’s reserves and production of non- ferrous minerals is not very satisfactory.
(ii)However, these minerals, which include copper, bauxite, lead, zinc and gold play a vital role in a number of metallurgical, engineering and electrical industries.
Which one of the following minerals is formed by decomposition of rocks, leaving a residual mass of weathered material?
Coal
Bauxite
Gold
Zinc
B.
Bauxite
Which one of the following minerals is contained in the monazite sand?
Oil
Uranium
Thorium
Coal
C.
Thorium