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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
Briefly define Mechanical Metamorphism.
Distinguish between the following:
Plutonic and Volcanic rocks.
State the types of rocks for the formation of which the following process is involved.
Formation of large crystals, coarse texture and slow cooling and compaction.
Distinguish between Regional and Contact metamorphism.
Classify the following rock: Limestone
Give one term for the following statement:
It has a definite chemical composition with its own chemical and physical properties.
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
Why fossils are preserved in Sedimentary and not in Igneous rocks?
Give reasons for the following
Man’s habitat is the biosphere and not the lithosphere in the true sense.
Out of 2,000 different types, only ______ are the basic minerals commonly found all over the earth.
