Which of the following is / are correctly matched ?
| Layer of Earth | Content | ||
|---|---|---|---|
| (a) | Continental Mass | (i) | Silica and Magnesium |
| (b) | Oceanic Crust | (ii) | Silica and alumina |
| (c) | Core | (iii) | Nickel and Iron |
Choose the correct option.
- AOption (a)
Only (A)
- BOption (b)
Only (B)
- COption (c)
Only (C)
- DOption (d)
All (A), (B) and (C)
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Correct answer
Only (C)
Why this answer is correct
The correct answer is Only (C)
Important Points
| Layer of Earth | Content | Explanation |
|---|---|---|
| Continental Mass | Silica and alumina | The continental mass, which forms the continents, is composed of rocks rich in silica and alumina. These rocks are lighter and less dense compared to the oceanic crust. |
| Oceanic Crust | Silica and Magnesium | The oceanic crust, which underlies the oceans, is primarily composed of rocks rich in silica and magnesium. These rocks are denser than the continental mass. |
| Core | Nickel and Iron | The core of the Earth is divided into the outer core and the inner core. It is primarily composed of nickel and iron, with the outer core being liquid and the inner core being solid. The presence of nickel and iron gives the core its high density. |
The given table provides the correct match between the layers of the Earth and their corresponding content. The continental mass is composed of rocks rich in silica and alumina, the oceanic crust is composed of rocks rich in silica and magnesium, and the core is primarily composed of nickel and iron.