Question:
The approximate percentage of Silicon available in the earth's crust is
The approximate percentage of Silicon available in the earth's crust is
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The earth's crust is dominated by a few elements. By weight, oxygen is the most abundant, followed by silicon, then aluminium, iron and others.
Updated On: Jun 16, 2026
- 47
- 27
- 8
- 5
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The Correct Option is B
Solution and Explanation
Concept:
The earth's crust is dominated by a few elements. By weight, oxygen is the most abundant, followed by silicon, then aluminium, iron and others.
Step 1:
Oxygen makes up about 47 percent of the crust by weight. Silicon is the second most abundant element.
Step 2:
Silicon constitutes roughly 27 percent of the earth's crust by weight, making it the second largest constituent after oxygen.
Answer: Option (2) — 27.
The earth's crust is dominated by a few elements. By weight, oxygen is the most abundant, followed by silicon, then aluminium, iron and others.
Step 1:
Oxygen makes up about 47 percent of the crust by weight. Silicon is the second most abundant element.
Step 2:
Silicon constitutes roughly 27 percent of the earth's crust by weight, making it the second largest constituent after oxygen.
Answer: Option (2) — 27.
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