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प्रश्न
What are minerals?
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उत्तर १
Minerals are natural inorganic substances having a crystalline form with definite physical and chemical properties. The most common minerals in the earth’s crust are silica, quartz, feldspar, mica, calcite, dolomite, gypsum, etc. There are about 2,000 minerals in the earth’s crust and these combine differently to form various kinds of rocks.
उत्तर २
The compounds of metals which occur in the earth crust and are obtained by mining are called minerals. A mineral is either a single compound or a complex mixture of several compounds of the same or different metals.
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संबंधित प्रश्न
Give an example of intrusive igneous rock.
Classify the following rocks by selecting the correct option given below:
basalt
Mention any two characteristics of Sedimentary Rocks.
State the types of rocks for the formation of which the following process is involved.
Decomposition of organic matter at different stages and over different periods of time.
How are sedimentary rocks formed?
What physical agents are involved in the sedimentary rocks?
Give one word for the following.
A sedimentary rock, which is composed of microscopically fine, soft and smooth particles.
Give reasons for the following
Silicates are the most common rock forming minerals.
Kola sample title is located in ______.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
