E. Answer these questions.
What is an ore?
2. Write three differences between metallic and non-metallic minerals.
What is mining? Explain the different methods of mining.
Write the names of four varieties of iron ore. Which is the largest iron-ore producing
country in the world?
Which metal is used to make aluminium? Name the largest silver-producing state in India.
Name two industries which uses limestone. Name two coal-producing states in India.
Write three ways to conserve mineral resources.
Answers
Explanation:
1. a naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.8
2. 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
3.the process or industry of obtaining coal or other minerals from a mine.
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
4.There are four main types of iron-ore deposits worked currently, depending on the mineralogy and geology of the ore deposits. These are magnetite, titanomagnetite, massive hematite and pisolitic ironstone deposits.
China, Brazil, Australia, Russia, and Ukraine are the five biggest producers of iron ore, but significant amounts are also mined in India, the United States, Canada, and Kazakhstan.
5.Aluminium is the most plentiful metal in the earth's crust. It is found in the form of aluminium oxide in an ore called bauxite. Alumina and bauxite are the two main raw materials in the aluminium making process. Aluminium is obtained by the electrolysis of alumina which extracts pure aluminium metal from alumina.
Top Mineral Producer in India (State-wise) and Other Countries
MINERAL TYPE TOP PRODUCERS (STATES)
BAUXITE Metallic (Non-Ferrous) 1. Odisha 2. Gujarat
COPPER Metallic (Non-Ferrous) 1. Madhya Pradesh 2. Rajasthan 3. Jharkhand
GOLD Metallic (Non-Ferrous) 1. Karnataka 2. Jharkhand
SILVER Metallic (Non-Ferrous) 1. Rajasthan 2. Karnataka
6.Limestone is used as a raw material in the cement industry and it is used in the iron and steel industry to remove impurities in the molten iron.
In the iron and steel industry and thermal power stations, high quality of coal is used.
Large coal deposits are found in Jharia in Jharkhand and Raniganj in West Bengal.
7.Coal Reserves
State Proved. Total
WEST BENGAL. 14156 31667
MADHYA PRADESH 11958 27987
TELANGANA. 10475 21702
MAHARASHTRA 7178. 12299
8.
Measures to conserve minerals :
Use of minerals in a planned and sustainable manner.
Recycling of metals.
Use of alternative renewable substitutes. Technology should be improved to use the low grade ores profitably.