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प्रश्न
What do you mean by rocks?
उत्तर
The earth’s crust is composed of rocks. A rock is made up by aggregate of one or more minerals. Rock may be hard or soft and in varied colors. For example, granite is hard, soapstone is soft. Gabbro is black and quartzite can be milky white. Rocks do not have a definite composition of mineral constituents. Feldspar and quartz are the most common minerals found in rocks.
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संबंधित प्रश्न
Which one of the following are the two main constituents of granite?
Which one of the following is the salient feature of metamorphic rocks?
Which one of the following is not a sedimentary rock?
Name the three major classes of rocks.
What is an igneous rock?
Describe the method of formation and characteristics of igneous rock.
What is meant by sedimentary rock?
Describe the mode of formation of sedimentary rock.
Describe the nature and mode of origin of the chief types of rock at the earth’s crust. How will you distinguish them?
Describe the types of metamorphic rock and how are they formed?
