Correct Answer: (b) Chhattisgarh
Solution:Chhattisgarh is the only tin-producing State in India. It also accounts for 35.4% of the tin ore reserves of India. Tin ore is
known as cassiterite, which was reported in Dantewara district (Bastar district in formerly Madhya Pradesh) by the
Directorate of Geology and Mining associated with the lepidolite bearing pegmatites. Cassiterite-bearing pegmatites
are reportedly rich in columbite and tantalite, which are ore of rare metals niobium and tantalum, respectively. Lepidolite is also a source of rare alkali metals namely lithium (Li < 2.15%) cesium (Cs < 0.83%) and rubidium (Rb < 5.9%). Chhattisgarh has a population of 25.6 million. The state is currently power surplus and India's leading producer of coal, iron ore, and dolomite, with considerable reserves of minerals such as bauxite, limestone, and quartzite.