B. Distinguish between the following.
1. Metallic and non-metallic minerals
2. Conventional and non-conventional power resources
C. Give short answers for the following questions.
1. What are the main characteristics of minerals?
2. How did minerals influence the history of human civilization?
3. Why is petroleum called 'black gold'?
4. How can we conserve minerals and power resources?
D. Give long answers for the following questions.
1. Explain the methods of mineral extraction.
2. What are minerals? Discuss different types of minerals on th
of their composition in detail.
Discuss non-conventional power sources,
3
Answers
Explanation:
Metallic Minerals are minerals in which metal elements are present in their raw form. Non-metallic minerals do not contain any metal substances in them. When metallic minerals are melted a new product is formed. In the case of non-metallic minerals, you don't get any new product after such a process
Conventional sources of energy are the sources that are commonly in use since long time. Non-conventional sources of energy refers to the sources that are identified few decades ago. They can be exhausted due to over consumption. They cannot be exhausted.
Petroleum is referred to as Black Gold. ... When the petroleum is drilled from the ground in the liquid form, it is referred to as crude oil. This name black gold itself is an indication that it is very vital to humans. Because of its oil and worth, people refer to it gold.
Minerals and power resources can be conserve by the following ways :
reducing wastage in the process of mining.recycling of metals.export of minerals should be minimum.improvement in the technique of extraction and purifying the minerals.
D . There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits.
2. Native elements. eg. Gold, Silver, Mercury, graphite, diamond.Oxides. eg corundum (incl. sapphire), hematite, spinel.Hydroxides. eg. Goethite, brucite.Sulfides. eg. Pyrite, galena, sphalerite.Sulfates. eg. Baryte, gypsum.Carbonates. eg. Calcite, magnesite, dolomite.Phosphates. eg. Apatite, monazite.Halides. eg.
The conventional sources of energy are generally nonrenewable sources of energy, which are being used since a long time. ... The sources of energy which are being produced continuously in nature and are in exhaustible are called nonconventional energy (or) renewable sources of energy