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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
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
Classify the following rocks by selecting the correct option given below:
schist
What are metamorphic rocks?
Distinguish between the following pair:
Degradation and aggradation
Why are the igneous rocks also called the primary rocks?
Which rocks are associated with ores of metals?
Mention any two characteristics of Sedimentary Rocks.
Name the rocks which are most widespread on the earth.
Explain this term associated with rocks: Laccoliths and Batholiths
Give a detailed account of lithiflcation of sedimentary rocks.
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Give one example of an area of: Sedimentary rocks in India
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
Distinguish between Intrusive and Extrusive Rocks
Fossils are found in.
Kola sample title is located in ______.
______ are chemical substances which exist in nature.
Minerals exist in nature ¡n the form of ______ or ______.
The world Igneous is derived from the Latin word ______ meaning ______.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
