Minerals and Ores

In 2010, the Ministry of Environment and Forests rejected the environmental clearance for Vedanta Aluminium's bauxite mining project in the Niyamgiri Hills.

This is the correct answer as copper is a non-ferrous mineral.

This is the correct answer as both statements a and b are correct.

This is the correct answer as coal and gypsum are sedimentary minerals that occur in beds or layers.

This is the correct answer as the ocean beds are rich in manganese nodules.

This is the correct answer as limestone is the basic raw material for the cement industry and essential for smelting iron ore in the blast furnace.

This is the correct answer as all the statements are correct.

This is the correct answer as this statement is correct.

This is the correct answer. Uranium and Thorium are available in Jharkhand and the Aravalli ranges of Rajasthan. The Monazite sands of Kerala is also rich in Thorium.

This is the correct answer. Very high grade hematites are found in this belt. The range of hills has 14 deposits of super high grade hematite iron ore. It has the best physicalproperties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Vishakhapatnam port.

This is the correct answer. Bauxite is formed by the decomposition of surface rocks, and the removal of soluble constituents, leaving a residual mass of weathered material containing bauxite ore.

Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals that are not corroded by water. This is the correct answer as gold and tin are found as placer deposits.

This is the correct answer. Ferrous minerals contain iron, e.g. iron ore, manganese, nickel, cobalt. etc. Non-ferrous minerals are copper, tin, lead, etc. Precious minerals are gold, silver, platinum, etc.

This is the correct answer as this statement is incorrect. India’s bauxite deposits are mainly found in the Amarkantak plateau, Maikal hills and the plateau region of Bilaspur-Katni.