The correct answer is: a) Beach sand minerals
Tamil Nadu is a state in southern India. It is the second-most populous state in India, after Uttar Pradesh. The state is known for its beaches, temples, and wildlife sanctuaries.
Tamil Nadu is also known for its reserves of beach sand minerals. These minerals include ilmenite, rutile, zircon, and monazite. Ilmenite is a black mineral that is used to produce titanium dioxide. Rutile is a red mineral that is used to produce titanium dioxide and rutile pigment. Zircon is a brown mineral that is used to produce zirconia and zirconium metal. Monazite is a brown mineral that is used to produce thorium and rare earth elements.
Gold is a precious metal that is used in jewelry and other decorative items. Diamonds are a type of gemstone that is prized for its beauty and rarity. Uranium is a radioactive metal that is used to produce nuclear energy.
Tamil Nadu does not have significant reserves of gold, diamonds, or uranium.