Assertion & Reason Test: Mineral & Energy Resources - 1 - Class 10 MCQ

(i) Iron ore:The primary use of iron ore (98%) is to make steel. The remaining 2% is used in various other applications, such as: powdered iron, for certain types of steels, magnets, auto parts and catalysts. radioactive iron (iron 59), for medicine and as a tracer element in biochemical and metallurgical research.

(ii) Copper: Copper electrical wires are safer to use than wires made of most other conductive metals because they are resistant to heat.

(iii) Manganese: Most of the manganese produced is used in the form of ferromanganese and silico manganese alloys for iron and steel manufacture. Manganese ores containing iron oxides are first reduced in blast furnaces or electric furnaces with carbon to yield ferromanganese, which in turn is used in steelmaking.

(iv) Mica: Mica is one of the most indispensable minerals used in electric and electronic industries, due to its Di-electric strength, low power factor, insulating properties and resistance to high voltage.

(i) Ferrous metallic mineral: The metallic minerals that contain iron are known as ferrous minerals. Its common examples include iron ore, manganese, chromite and nickel.

(ii) Non-metallic minerals: As the name suggests, non-metallic minerals are the minerals that do not contain metals, e.g. limestone, mica, coal, gypsum, dolomite, phosphate, salt, manganese, granite etc. They are the minerals that do not contain metallic elements. They are generally hard and have a shiny surface.

(iii) Non-ferrous metallic minerals: These other metallic minerals are called nonferrous metallic minerals in the state laws and rules. Non-ferrous metallic minerals include metals such as copper, nickel, platinum, palladium, gold, silver, cobalt, chromium, zinc, lead, bismuth, tin, tungsten, tantalum, or niobium.

(iv) Energy minerals: Energy minerals are used to produce electricity, fuel for transportation, heating for homes and offices and in the manufacture of plastics. Energy minerals include coal, oil, natural gas and uranium.

• It lies in Chhattisgarh and Maharashtra.

• Very high grade haematite ores are found in the famous Bailadila ranges of hills in the Bastar district.

• The range of hills comprises of 14 deposits of super high grade haematite iron ore.

• The iron- ore extracted from these mines have the best physical properties needed for steel making.

• Iron ore from these mines is exported to Japan and South Korea via the Vishakhapatnam port.

(i) Broadly speaking, peninsular rocks contain most of the reserves of coal, metallic minerals, mica and many other non-metallic minerals.

(ii) Sedimentary rocks on the western and eastern flanks of the peninsula, in Gujarat and Assam have most of the petroleum deposits.

(iii) Rajasthan with the rock systems of the peninsula, has reserves of many non-ferrous minerals.

(iv) The vast alluvial plains of north India are almost devoid of economic minerals.

(v) These variations exist largely because of the differences in the geological structure, processes and time involved in the formation of minerals.