Q. What is the main mineral component of the continental mass ?
✅ Correct Answer: (D)
Silica and Alumina
Explanation: 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).
Explanation by: Deepak Sahoo
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).