Which of the following substances are found in the beach sands of many parts of Kerala? 1. Ilmenite 2. Zircon 3. Silimanite 4. Tungsten Select the correct answer using the code given below:

1. The question asks which substances are found in the beach sands of Kerala. 2. The beach sands in certain parts of Kerala, particularly the Chavara-Neendakara belt, are rich in heavy mineral deposits. 3. These minerals include Ilmenite (source of titanium), Zircon (source of zirconium), Rutile (titanium), Monazite (thorium and rare earths), and Sillimanite. 4. Tungsten is typically not found in significant quantities in these beach sand deposits; its primary ores are Wolframite and Scheelite, found in different geological settings. 5. Therefore, Ilmenite, Zircon, and Sillimanite are found in these sands, while Tungsten is not.