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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. |
APPEARS IN
संबंधित प्रश्न
Write True or False. Rewrite the false statement correctly :
Sedimentary rocks are formed by the cooling and solidification of molten rock called magma
Classify the following rocks by selecting the correct option given below:
Gneiss
How are rocks different from minerals?
How are igneous rocks formed?
How are sedimentary rocks formed?
Name two important landforms made by Igneous Rocks.
Name the types Sedimentary rocks based on agents of formation.
How are igneous rocks classified on the basis of their chemical composition?
Classify the igneous rocks on the basis of their place of origin.
How are chemically-formed sedimentary rocks produced?
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Classify the following rock: Clay
Classify the following rock: Loess
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.
Give reasons for the following
Man’s habitat is the biosphere and not the lithosphere in the true sense.
Find the difference between:
Igneous and sedimentary rocks
______ is known as the primary rocks.
The word ‘Igneous’ is derived from the ______ word.
Distinguish between:
Internal Processes and External processes.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
