जॉइन Examsbookउत्तर : 3. "Iron"
In the structure of Planet Earth, below the mantle, the core is mainly made up of which one of the following ?5
प्र: In the structure of Planet Earth, below the mantle, the core is mainly made up of which one of the following ?
- 1Aluminiumfalse
- 2Chromiumfalse
- 3Irontrue
- 4Siliconfalse
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उत्तर : 3. "Iron"
व्याख्या :
Answer: C) Iron Explanation:

