| 1. | Which of the following is called the White of the Earth? |
A. Crust | |
B. Mantle | |
C. Core | |
D. none of these |
| 2. | Which of the following elements predominate in the mantle? |
A. silica and manganese | |
B. silica and aluminum | |
C. silica and magnesium | |
D. silica and iron |
| 3. | Approximately what percentage of the total mass of the earth is found in the mantle? |
A. 32%’ | |
B. 52%’ | |
C. 68%’ | |
D. 83%’ |
| 4. | Moho discontinuity is located in – |
A. between crust and mantle | |
B. between the upper mantle and the lower mantle | |
C. between mantle and core | |
D. between the inner mantle and the outer mantle |
| 5. | Which element predominates in the core of the earth? |
A. silica and aluminum | |
B. silica and magnesium | |
C. silica and nickel | |
D. iron and nickel |
| 6. | Which of the following statement is false? |
A. The continent is mainly made up of granite rocks. | |
B. Basalt rock predominates in the oceanic basin. | |
C. Core (Core) is also known as Berisphere. | |
D. About 68% of the Earth’s volume and 83.5% of its mass is occupied by the mantle. |
| 7. | The reason for the increase in temperature in the earth’s interior is – |
A. Pressure | |
B. fission of radioactive substances | |
C. both of the above | |
D. none of these |
| 8. | The correct sequence of the different layers of the continental crust according to the increase in depth is – |
A. flaky, granite, basalt | |
B. flaky, basalt, granite | |
C. granite, flaky, basalt | |
D. granite, basalt, flaky |
| 9. | The correct descending order of the amount of different elements found on the earth’s crust is – |
A. oxygen, silicon, iron, aluminum | |
B. silicon, oxygen, aluminum, iron | |
C. iron, silicon, oxygen, aluminum | |
D. oxygen, silicon, aluminum, iron |
| 10. | Which element is found in abundance in the Earth’s crust? |
A. calcium | |
B. aluminum | |
C. Iron | |
D. potassium |