Mineral Resources Of Karnataka

Aluminium

Step 1: The chapter clearly states that bauxite ore is mostly used in the preparation of aluminium. Step 2: Bauxite is the primary raw material for aluminium production worldwide. Step 3: Besides aluminium production, bauxite is also used in manufacturing cement, steel, and electric wires. Step 4: Iron comes from iron ore, copper from copper ore, and manganese from manganese ore - not from bauxite. Step 5: Therefore, aluminium is the correct answer as it is the main metal extracted from bauxite ore.

It has multiple industrial uses

Step 1: The chapter explains that manganese has numerous applications across different industries. Step 2: It is used as an alloy in steel manufacturing to increase hardness. Step 3: Manganese is also used in manufacturing chemicals, electrical equipment, and chemical fertilizers. Step 4: Additional uses include calico printing and paint production. Step 5: Due to these diverse applications across multiple industries, manganese is called 'the jack of all trades' - meaning it is useful in many different ways, just like a person who can do many different jobs.

Belgavi

Step 1: The chapter mentions that bauxite deposits in Karnataka are found in several districts. Step 2: These districts include Belgavi, Chikkamagaluru, Chitradurga, Dakshina Kannada, and Udupi. Step 3: Among all these districts, Belgavi is specifically identified as the leading bauxite-producing district. Step 4: Belgavi has bauxite mines in Belgavi and Khanapur taluks. Step 5: The bauxite ore from this district is used in the Indian Aluminium Company factory located at Belgavi itself.

63%

Step 1: Karnataka has both magnetite and haematite grade iron ore reserves. Step 2: The chapter specifically states that high-grade magnetite ore contributes 63% of iron ore produced in Karnataka. Step 3: This means magnetite is the dominant type of iron ore in the state. Step 4: The remaining portion (37%) consists of haematite ore. Step 5: Magnetite is considered higher quality iron ore compared to haematite, making Karnataka's iron ore reserves particularly valuable.