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प्रश्न
How do acidic igneous rocks differ from basic igneous rocks?
अंतर स्पष्ट करें
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उत्तर
Igneous rocks may be classified as acidic or basic depending on their chemical composition.
- Acidic igneous rocks contain more than 65% silica and a low percentage of oxides. They are light in colour and less dense.
Example: Granite. - Basic igneous rocks contain a low percentage of silica and a high percentage of oxides (such as iron and magnesium). They are dark in colour and dense.
Example: Basalt.
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Rock and it's Types
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संबंधित प्रश्न
Classify the following rocks by selecting the correct option given below:
limestone
How are igneous rocks formed?
What are metamorphic rocks?
Give a detailed account of lithiflcation of sedimentary rocks.
Fill in the blanks
______ is the best example of the wind deposited stratified rock.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
Distinguish between Metamorphic rock and sedimentary rock.
Diamond is an example of _______ rock.
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 |
