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प्रश्न
Why are the igneous rocks also called the primary rocks?
उत्तर
The igneous rocks were the first to be formed. They form the basis of formation of other types of rocks. Thus, they are called primary rocks.
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संबंधित प्रश्न
Fill in the blank
Conglomerate is an example of _____________ rocks.
Fill in the blank
Sedimentary rocks such as limestone change into ___________.
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:
gypsum
Name the three stages of lithification of Sedimentary rocks.
Distinguish between rocks and minerals.
How are sedimentary rocks classified on the basis of their formation?
Give one word for the following.
The core of the earth occupied by rock in iron and nickel.
Fill in the blanks
______ rocks are formed by the deposition of shells and skeletons of organism.
Fill in the blanks
______ rock contain a low percentage of silica and a high percentage of basic oxides.
Distinguish between Intrusive and Extrusive Rocks
Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape
Mention a few specimens of magnificent rock-cut architecture in India?
The two types of Intrusive Igneous rocks are ______.
Parent Rock is converted to loose Rock by ______.
______ are chemical substances which exist in nature.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
