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प्रश्न
Give reasons for the following
Rocks are of great economic significance.
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उत्तर
Rocks are of great economic significance Some of the main benefits of rocks are as follows :
- After disintergration, they turn into valuable soils.
- They are the store-houses of a large number of minerals.
- They are the source of precious metals like gold, silver, platinum etc.
- They are source of fuel-minerals.
- They provide different types of stones.
संबंधित प्रश्न
Discuss the importance of rocks for the construction business.
Classify the following rocks by selecting the correct option given below:
marble
How are igneous rocks formed?
Distinguish between the following pair:
Degradation and aggradation
Name three types of rocks.
What processes are involved in the formation of Igneous Rocks?
How are sedimentary rocks formed?
Classify the following rock: Gneiss
Classify the following rock: Marble
Give one word for the following.
The upper part of lithosphere, which is rich in silica and aluminium.
Fill in the blanks
______ rock contain a low percentage of silica and a high percentage of basic oxides.
Why are the Igneous Rocks called Primary Rocks?
Diamond is an example of _______ rock.
Mention the types of rocks based on formation?
The types of rocks based on formation are
Parent Rock is converted to loose Rock by ______.
Intrusive Igneous rocks are also called ______ rocks.
What is lava?
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
