Which of the following districts in Kerala is renowned for having the largest deposits of China clay (Kaolin) in the state?

💡 Solution & Explanation

Thiruvananthapuram district contains the largest reserves of sedimentary China clay, locally known as Kaolin, which is extensively utilized in ceramic, paper, and refractory manufacturing units. Other districts like Wayanad or Idukki feature different mineral profiles dominated by crystalline rocks rather than extensive sedimentary clay beds. Kaolin deposits in this region are primarily formed through the weathering of feldspathic gneissic rocks.