Minerals and Ores

Mayurbhanj and Keonjhar districts in Odisha are famous for their manganese ore mines. Odisha is one of the leading producers of manganese in India, and these districts contain significant deposits of this essential mineral used in steel production and batteries.

Lignite is a brownish-black coal with relatively low carbon content and high moisture, often called 'brown coal'. It is the lowest rank of coal and is used primarily in electricity generation. The other options (chromite, bauxite, magnesite) are different minerals with distinct properties.

Khetri, located in Rajasthan's Jhunjhunu district, is famous for its copper mines and is one of India's oldest copper mining centers. The Khetri Copper Complex is a major copper production facility, making it synonymous with copper in India.

Asbestos is a naturally occurring mineral fiber known for its fire-resistant and heat-resistant properties. It has been widely used in construction and insulation materials due to these characteristics. The other options are incorrect - asbestos is not a mobile company, not a specific chemical element, and 'none of these' is incorrect since it is indeed fire-proof.

Statement 1 is wrong. Tungsten is used in the making of filaments of electric bulb. Statement 2 is correct. Iron is extracted from its ore called haematite.

Yes, it is the correct answer, as all the options are correct.

Yes, it is correct. Tin, copper and lead are found in igneous and metamorphic rocks.

Yes, gold and platinum are precious minerals.

Yes, magnetite is the finest iron ore with a very high content of iron up to 70%.

Yes, it is correct. Mica is a mineral which is made up of a series of plates or leaves.

Both options are correct.

Potential resources may be used in the future.

Silica (silicon dioxide, SiO2) is the most abundant mineral compound in Earth's crust, constituting about 59% of the crust by volume. It is the primary component of sand and quartz, and forms the basis for most igneous, metamorphic, and sedimentary rocks. While bauxite (aluminum ore), manganese, and iron are important minerals, they occur in much smaller quantities compared to silica. The abundance of silica reflects the dominance of oxygen and silicon as the two most abundant elements in the Earth's crust.

Koderma in Jharkhand is famous as India's leading mica mining center. The region has abundant deposits of high-quality mica, which is used in electrical and electronic industries, as well as in cosmetics.

Bauxite is the principal ore of aluminium, containing hydrated aluminium oxides like gibbsite, boehmite, and diaspore. It's the primary commercial source for aluminium extraction through the Bayer process. Bauxite forms through the weathering of aluminium-rich rocks in tropical climates.