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प्रश्न
Distinguish between the following:
Calcarious and Carbonacious rocks.
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उत्तर
| Calcarious rocks | Carbonacious rocks |
| The sedimentary rocks formed by the deposition of shells and skeletons of sea organisms, such as corals, clams, oysters, etc., are called calcareous rocks due to the excess of calcium. | The sedimentary rocks formed by the deposition of large-scale vegetation and animals, etc., are called carbonaceous rocks due to the excess of carbon. |
| Formed mainly from calcium carbonate. | Formed mainly from carbon-rich plant remains. |
| Made from shells and skeletons of marine organisms. | Made from accumulated, compacted plant material. |
| Examples: Limestone, Chalk. | Examples: Peat, Lignite, Bituminous coal, Anthracite. |
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संबंधित प्रश्न
Fill in the blank
A category of rock which is formed by the alteration of the parent rock due to heat and pressure is called: ______________.
Distinguish between the following pair:
Degradation and aggradation
Describe the process that leads to exfoliation.
Name three types of rocks.
Give two examples of sedimentary rocks.
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
Describe how igneous rocks are formed.
Differentiate between Rock and Mineral
How are sedimentary and igneous rocks formed?
What is meant by the term ‘metamorphism’?
Classify the following rock: Limestone
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
Igneous rocks are called primary rocks.
Kola sample title is located in ______.
What are the characteristics of Sedimentary rocks?
Mention some uses of rocks.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
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 |
