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Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Mineral and Power Resources, Class 8, Social Science Studies. You can practice these practice quizzes as per your speed and improvise the topic.
Q.
What would you call a naturally occurring substance that has a definite chemical composition
- a)Resources
- b)Mineral
- c)Atmosphere
- d)Environment
Correct answer is option 'B'. Can you explain this answer?
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Practice Quiz or MCQ (Multiple Choice Questions) with solutions are av...
A mineral is a homogeneous naturally occurring substance with a definite but not necessarily fixed chemical composition. Most minerals are solids with an ordered atomic arrangement, and most are inorganic in the chemical sense of that word.
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Practice Quiz or MCQ (Multiple Choice Questions) with solutions are av...
A mineral is a homogeneous naturally occurring substance with a definite but not necessarily fixed chemical composition. Most minerals are solids with an ordered atomic arrangement, and most are inorganic in the chemical sense of that word.
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Answer:
A naturally occurring substance that has a definite chemical composition is called a mineral. Minerals are solid, inorganic substances that are found in the Earth's crust. They are formed through geological processes over millions of years. Minerals have a specific chemical composition and a distinct crystal structure, which gives them their unique physical and chemical properties.
Characteristics of Minerals:
- Naturally Occurring: Minerals are naturally formed and are not made by humans. They occur in various geological settings such as igneous rocks, sedimentary rocks, and metamorphic rocks.
- Definite Chemical Composition: Minerals have a specific chemical formula, which means that they are composed of specific elements in fixed proportions. For example, quartz is composed of silicon and oxygen (SiO2).
- Solid State: Minerals are solids and have a definite shape and volume at room temperature. They can be found in various forms such as crystals, grains, and rocks.
- Inorganic: Minerals are not formed by living organisms. They are formed through geological processes such as cooling and solidification of magma, precipitation from solution, and metamorphism.
- Distinctive Physical Properties: Minerals have unique physical properties such as color, hardness, luster, cleavage, and specific gravity. These properties can be used to identify and differentiate minerals.
Examples of Minerals:
- Quartz: It is one of the most abundant minerals on Earth and is found in many different rocks.
- Feldspar: It is a group of minerals that are commonly found in igneous and metamorphic rocks.
- Calcite: It is a mineral that is composed of calcium carbonate and is commonly found in sedimentary rocks.
- Diamond: It is a rare and highly valued mineral that is composed of carbon. It is the hardest known natural substance.
Conclusion:
Minerals are naturally occurring substances that have a definite chemical composition. They are important resources that are used in various industries and have a significant impact on the economy and development of a country. Understanding the characteristics and properties of minerals is essential for the sustainable use and conservation of these valuable resources.
A naturally occurring substance that has a definite chemical composition is called a mineral. Minerals are solid, inorganic substances that are found in the Earth's crust. They are formed through geological processes over millions of years. Minerals have a specific chemical composition and a distinct crystal structure, which gives them their unique physical and chemical properties.
Characteristics of Minerals:
- Naturally Occurring: Minerals are naturally formed and are not made by humans. They occur in various geological settings such as igneous rocks, sedimentary rocks, and metamorphic rocks.
- Definite Chemical Composition: Minerals have a specific chemical formula, which means that they are composed of specific elements in fixed proportions. For example, quartz is composed of silicon and oxygen (SiO2).
- Solid State: Minerals are solids and have a definite shape and volume at room temperature. They can be found in various forms such as crystals, grains, and rocks.
- Inorganic: Minerals are not formed by living organisms. They are formed through geological processes such as cooling and solidification of magma, precipitation from solution, and metamorphism.
- Distinctive Physical Properties: Minerals have unique physical properties such as color, hardness, luster, cleavage, and specific gravity. These properties can be used to identify and differentiate minerals.
Examples of Minerals:
- Quartz: It is one of the most abundant minerals on Earth and is found in many different rocks.
- Feldspar: It is a group of minerals that are commonly found in igneous and metamorphic rocks.
- Calcite: It is a mineral that is composed of calcium carbonate and is commonly found in sedimentary rocks.
- Diamond: It is a rare and highly valued mineral that is composed of carbon. It is the hardest known natural substance.
Conclusion:
Minerals are naturally occurring substances that have a definite chemical composition. They are important resources that are used in various industries and have a significant impact on the economy and development of a country. Understanding the characteristics and properties of minerals is essential for the sustainable use and conservation of these valuable resources.
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Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Mineral and Power Resources, Class 8, Social Science Studies. You can practice these practice quizzes as per your speed and improvise the topic.Q.What would you call a naturally occurring substance that has a definite chemical compositiona)Resourcesb)Mineralc)Atmosphered)EnvironmentCorrect answer is option 'B'. Can you explain this answer?
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