Test: Minerals in India - Class 10 MCQ

Odisha is recognized for its significant bauxite deposits, particularly in districts like Kalahandi and Sambalpur, contributing to India's aluminum production industry.

Anthracite is known for being the hardest and highest quality type of coal with a carbon content of over 90%. It burns slowly, produces minimal smoke, and is considered a cleaner-burning fuel, making it efficient for various energy needs.

Gondwana coalfields constitute 98% of India’s coal reserves and are primarily located in river valleys of major rivers like the Damodar and Mahanadi, making them the most significant source of coal in the country.

Lignite, also known as brown coal, is characterized by its high moisture content and lower carbon levels compared to other types of coal. It is the least developed form of coal, making it softer and less efficient than anthracite or bituminous coal.

The primary component of coal is carbon, which can vary in content depending on the type of coal. Carbon is responsible for coal’s energy content and its utility as a fuel source.

Manganese is crucial in the iron and steel industry as it helps to harden steel and increase its resistance to rust. Its role in alloy production is vital for enhancing the properties of steel.

Peat is the least developed form of coal, characterized by low carbon content and representing an early stage in the transformation of organic material into coal. It is still in the process of becoming coal.

Coal is a primary fuel source for thermal power plants, where it is burned to generate steam that drives turbines to produce electricity. Its high carbon content makes it an effective energy source.

Anthracite is a type of coal, not an iron ore. The other options—hematite, magnetite, and limonite—are all recognized as types of iron ore, with varying iron content and properties.

Bituminous coal, which accounts for about 80% of the total coal output worldwide, is commonly used in various industrial applications, including in blast furnaces for smelting iron due to its high carbon content and energy yield.

Bauxite is the primary source of aluminum, which is known for being lightweight and strong. This metal is widely used in industries such as aerospace, automotive, and household appliances.

Manganese is primarily used as a raw material for smelting iron ore and for manufacturing ferro alloys. Its properties make it essential in steel production, enhancing hardness and durability.

Limestone serves as a primary raw material in the cement industry. It is heated to produce lime, which is a crucial component in the chemical reactions that lead to cement formation.

Metallic minerals are characterized by containing metals in their raw form, being hard, and having a natural shine. Non-metallic minerals, on the other hand, typically do not contain metals and are generally softer, which makes Option B the correct choice.

The Digboi Oil Field is noted as the oldest oil field in India, established in Assam. It has historical significance as one of the first locations where oil was discovered and extracted in the country.

Non-metallic minerals are defined by the absence of metals in their composition. They are often softer and lack shine, which distinguishes them from metallic minerals.

Limestone has a variety of applications, including its use in producing fertilizers, as a flux in the iron and steel industry, and in manufacturing quicklime and slaked lime. Therefore, all the options listed are correct.

Minerals are considered exhaustible resources because they cannot be replenished immediately. Their distribution is uneven across the Earth's surface, and they vary widely in properties, making Option B the correct choice.

Petroleum is predominantly found in sedimentary rock formations such as sandstone, shale, and limestone. These formations contain the organic materials that have been transformed into hydrocarbons over millions of years.

Hematite, known as 'red ore,' typically contains 60-70% pure iron, making it a significant source of iron ore for various industrial applications.