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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
Write True or False. Rewrite the false statement correctly :
Basalt is an example of an intrusive igneous rock.
Write True or False. Rewrite the false statement correctly :
Igneous and sedimentary rocks can change into metamorphic rocks.
Classify the following rocks by selecting the correct option given below:
sandstone
Name any three elements of the earth’s crust.
Name the three stages of lithification of Sedimentary rocks.
Name the types Sedimentary rocks based on agents of formation.
Explain this term associated with rocks: Metamorphism
State the chief characteristics of metamorphic rocks.
What physical agents are involved in the sedimentary rocks?
Give one word for the following.
Igneous rocks, which contain a low percentage of silica.
Give one word for the following.
The best example of chemically-formed sedimentary rock, which has been formed by the evaporation of water from solution containing minerals.
Fill in the blanks
The interior layer is the core, which is made up mainly of iron and nickel, and is called ______.
Why are the Igneous Rocks called Primary Rocks?
Give an example of a Plutonic rock.
Give reasons for the following
Silicates are the most common rock forming minerals.
Find the difference between:
Igneous and sedimentary rocks
Kola sample title is located in ______.
Diamond is an example of _______ rock.
An aggregate of minerals on the Earth’s Crust is called ______.
Explain the type of Igneous Rocks.
