Perovskite is a mineral containing calcium titanium and oxygen crystallises in the unit cell as shown below. On the basis of the information write the formula of perovskite
Answers
Sopara (by some identified with the Ophir mentioned in the Hebrew texts[2]) was an ancient port town and the capital of the ancient Aparanta. The ancient port of Sopara was an important port in western India, which operated under the celebrated port of Cambay. The site of this ancient town is located near the present day Nala Sopara. In ancient times, it was the largest township on India's west coast, trading with Mesopotamia, Egypt, Cochin, Arabia and Eastern Africa.
The Mahabharata and the Puranas state that the Śūrpāraka was reclaimed from the sea for the dwelling place of Parashurama and it became a tirtha for this reason.[3] The finding of the relics in a stupa and the rock edicts (the fragments of the 8th and 9th major rock edicts) of Ashoka in 1882[4] prove the importance of this port town from the 3rd century BCE[5] to the 9th century CE. The Sanskrit text Mahavamsa (VI, 46,47) states that the first king of the Sinhalese Kingdom (now Sri Lanka), Vijaya sailed from Supparaka (Sopara) to Sri Lanka.[6] Ptolemy mentioned this town as Soupara, and it was a major commercial centre during his time[7] According to the Jaina writers, Shripala, a mythical king married Tilakasundari, daughter of king Mahasena of Soparaka. Jinaprabhasuri (14th century) in his Vividhatirthakalpa mentioned Soparaka as one of 84 Jaina tirthas (sacred places). He also mentioned about an image of Rishabhadeva located in this city till his time.[8]
The earliest reference occurs in Mahabharata as Shuparak. Suppara Jataka, believed to be of 6th century BC, talks of Sopara as a prosperous port trading with ports of S.W.Asia, Gujarat, Malabar and Srilanka, its experts (navigation pilots- bodhisattvas), and the seas that they voyaged across. From about third or fourth century BC precise historic data can be pieced together.
During primeval time, it was a colossal city of India western Ghats and was one of the major ports for foreign trading. India was trading with Arabia, Africa, Egypt and Rome via this Port. It has also been suggested that King Hiram of Tyre brought gold, precious stones and almug trees for Solomon from this city that was called land of Ophir.[9]