A

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Q. What is the main mineral component of the continental mass ?

  • (A) Oxygen and Alumina
  • (B) Magnesium and Silica
  • (C) Alumina and Magnesium
  • (D) Silica and Alumina
  • Correct Answer - Option(D)
  • Views: 10
  • Filed under category Geography
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Explanation by: Admin
Silica and Alumina are the main mineral components of the continental mass. It is thus called Sial (Si-silica and Al-alumina). However, the oceanic crust mainly consists of silica and magnesium and it is therefore called Sima (si-silica and ma-magnesium).

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