NCERT · Class 7 · Social Science · Inside Our EarthThe oceanic crust mainly consists of which minerals?
Step-by-Step Solution
The oceanic crust mainly consists of silica and magnesium; therefore, it is called sima (si-silica and ma-magnesium).
Detailed Options Breakdown
Option : Silica and Alumina
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Inside Our Earth.
Option 1: Iron and Nickel
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Inside Our Earth.
Option 2: Silica and Magnesium (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 3: Calcium and Carbonate
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Inside Our Earth.
💡 Study Guide: This question tests core syllabus concepts from Inside Our Earth. For formulas, key summaries, and mock exam reference guides, read the full Inside Our Earth Revision Notes.