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प्रश्न
The most abundant element in earth’s crust is ______.
विकल्प
hydrogen
oxygen
silicon
carbon
MCQ
रिक्त स्थान भरें
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उत्तर
The most abundant element in earth’s crust is oxygen.
Explanation:
Oxygen is the most abundant element in the earth’s crust, making up about 49.5% by weight. It mainly occurs in the form of silicates, carbonates, and oxides of various metals in the earth’s crust. Silicon is the second most abundant element at 25.7%, while hydrogen and carbon are much less abundant in the crust.
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