There are over three thousand minerals. The iron in our blood, the cooper in our mobile phones, and the bauxite, coal, salt, clay, and marble fond all over the world are all examples of minerals. On the basis of their composition, how are minerals broadly classified? *
1 point
renewable minerals and nonrenewable minerals.
agricultural minerals and manufacturing minerals.
metallic minerals and non-metallic minerals.
natural minerals and artificial minerals.
23 Metallic minerals may be ferrous or non-ferrous. Minerals that contain iron, like iron ore, manganese, and chromites, are called _______ minerals, whereas non-ferrous minerals, such as gold, silver, copper, or lead, do not contain _______. *
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metallic; iron
ferrous; salts
ferrous; iron
base; iron
24 Various sources of energy, depending on how long people have been exploiting them, are classified as conventional and non-conventional. Most conventional sources of energy, such as firewood, coal, and oil, are non-renewable, which means their supply is limited. So we need to learn about and use more of new, preferably renewable sources, such as solar, wind, and tidal power. In India, hydro-electric (hydel) power is considered a _______ source of energy, whereas nuclear power is considered a _______ source of energy. *
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anti-conventional; non-conventional
conventional; non-conventional
non-conventional; conventional
conventional; traditional
25 Nuclear power is the fourth-largest source of electricity in India, and it is obtained from energy stored in the nuclei of atoms of naturally occurring radio active elements like uranium and thorium which undergo nuclear fission in nuclear reactors and emit power. The USA and Europe are the leading producers of nuclear power. Identify the correct match of nuclear power station in India with their locations: *
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a..Kalpakkam: Tamilnadu; Tarapur: Maharashtra; Ranapratap Sagar: Kota, Rajasthan; Narora: Uttar Pradesh; Kaiga: Karnataka
b..Kalpakkam: Maharashtra; Tarapur: Tamilnadu; Ranapratap Sagar: Kota, Rajasthan; Narora: Uttar Pradesh; Kaiga: Karnataka
c..Kalpakkam: Maharashtra; Tarapur: Tamilnadu; Ranapratap Sagar: Kota, Rajasthan; Narora: Karnataka; Kaiga: Uttar Pradesh
d. Kalpakkam: Karnataka; Tarapur: Maharashtra; Ranapratap Sagar: Kota, Rajasthan; Narora: Uttar Pradesh; Kaiga: Tamilnadu
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Answers
Answer:
Minerals
Explanation:
EXPLAIN MINERALS - DEFINITION
A naturally occurring substance that has a definite chemical composition is a mineral. They are created by natural processes without any human interference. They can be identified on the basis of their physical properties such as colour, density, hardness and chemical property such as solubility. Minerals are found in varied forms in nature, ranging from the hardest diamond to the softest talc.
CLASSIFY MINERALS - SHORTCUT
Based on the chemical and physical properties, minerals are broadly classified as metallic and non-metallic. Metallic minerals are further classified as ferrous and non-ferrous minerals. Non-metallic minerals are either organic or inorganic in origin.
MODE OF OCCURRENCE OF MINERALS - SHORTCUT
Minerals occur in different types of rocks. Some are found in igneous rocks, some in metamorphic rocks while others occur in sedimentary rocks. Generally, metallic minerals are found in igneous and metamorphic rock formations. Sedimentary rock formations of plains and young fold mountains contain non-metallic minerals like limestone. Mineral fuels such as coal and petroleum are also found in the sedimentary strata.
NON-FERROUS MINERALS - SHORTCUT
Non- ferrous minerals are those which do not have iron content in them. However, these minerals, which include copper, bauxite, lead, zinc and gold play a vital role in a number of metallurgical, engineering and electrical industries.
NON-METALLIC MINERALS - SHORTCUT
The non-metallic minerals do not contain metals. Limestone, mica and gypsum are examples of such minerals. The mineral fuels like coal and petroleum are also non-metallic minerals.
ROCK MINERALS - SHORTCUT
A rock is an aggregate of one or more minerals but without definite composition of constituent of mineral. Rocks from which minerals are mined are known as ores. Examples of rocks include granite, limestone, marble, pumice, obsidian, sandstone, shale and slate.
CHARACTERISTICS OF MINERALS - SHORTCUT
i) Minerals are not evenly distributed over space.
ii) Minerals have inverse relationship in quality and quantity, i.e., good quality minerals are less in quantity than low quality minerals.
iii) Minerals are exhaustible over time.
INFLUENCE OF MINERALS ON ECONOMIC ACTIVITY - SHORTCUT
The economic development of a country is influenced by the availability of minerals. Minerals form the base for several large scale industries. Agriculture, too, is influenced by the availability of minerals in the form of fertilisers.
SOME IMPORTANT MINERALS AND THEIR USES - SHORTCUT
i) Bauxite: Aluminium is extracted from bauxite ores. It is used in making aircrafts, utensils, electric wires, etc.
ii) Mica: It is a shiny mineral and is used extensively in electrical and electronic industry.
iii) Chrome: It is used for preparing 'stainless steel' utensils.
iv) Asbestos: It is a heat-resistant mineral which is used extensively in industry and also for household roofing.
v) Barytes: The mineral barium is extracted from it which is used for industrial and medical purposes.
vi) Feldspar: It is one of the raw materials used in the making of glass and ceramicware like wash basins.