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प्रश्न
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
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उत्तर
| Acid Igneous Rocks | Basic Igneous Rocks |
| These are lighter rocks with silica content 65 to 85 percent with density less than 2 g/cm.3 | These are denser rocks with silica content 40 to 60 percent with average density between 2.8 g/Cm3 and 3.0 g/cm.3 |
| Example: Granite. | Example: Basalt. |
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संबंधित प्रश्न
Write True or False. Rewrite the false statement correctly :
Rocks are used in construction industries.
Classify the following rocks by selecting the correct option given below:
basalt
What is Geology?
How are chemically-formed sedimentary rocks formed? Give examples.
Classify the following rock: Marble
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Fill in the blanks
______ is the best example of the wind deposited stratified rock.
Fill in the blanks
______ rock contain a low percentage of silica and a high percentage of basic oxides.
Give one example of an area of: Sedimentary rocks in India
What is the basis for the classification of rocks?
Give one term for the following statement:
Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape
Find the difference between:
Igneous and sedimentary rocks
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
What are fossils?
Parent Rock is converted to loose Rock by ______.
Explain the type of Igneous Rocks.
______ rocks are also called Primary rocks.
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 |
