Question

The vast alluvial plains of North India are almost devoid of ________. (1)
a. Rock minerals
b. economic minerals
c. petroleum minerals
d. fuel minerals

Answer 1

Explanation:

The vast alluvial plains of North India are devoid of economic mineral

Answer 2

The 'vast alluvial plains of North India' are almost devoid of economic minerals.

Option (b)

Explanation:

• The 'alluvial plains' are devoid of minerals due to the unequal distribution of minerals in whole topography like peninsular rocks are rich in metallic mineral resources whereas sedimentary rocks are rich in petroleum and related minerals.
• The unequal distribution Is owed to the structure of geological cycles, the process of formation and time involved in the formation.

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