Sn is Tin. and the suffix for Chlorine is nearly always Chloride. The (II) means the Tin [in a hypothetical situation where the compound was purely ionic] has an oxidation state of 2, or +2, (ie deficient of two electrons). Source: A2 Chemistry Student.
The chariot was built of pieces of wood which had been bent into the required shape possibly by immersing them in boiling hot water for several hours, bending them and then letting them dry. Various kinds of wood were used: elm, ash for the axles and sycamore for the foot board. The Egyptians knew two types of chariots.
Symbolically, the chariot festival is a journey from dark to light. This festival is celebrated at Puri with great care and grandeur. The construction of these massive chariots takes place near the palace of the King of Puri and on the Chaturdasi (4th day after the new moon), preceding the day of the Ratha Yatra parade.