Depending on the species, it can take anywhere from a few weeks to many months. Arctic species often spend close to a year in the chrysalis before emerging. The caterpillar forms the chrysalis inside of itself when it is fully grown, then sheds its skin to become the chrysalis.
The answer is correct. Thailand is formerly known as Siam, which is located in Mainland Southeast Asia. It is situated at the center of the Indochinese Peninsula and bordered by Myanmar and Laos. Thailand is listed as the 51st largest country and 20th of the most populous country in the world with a population of 66 million.
Iran is the legal name. Persia, was an ancient kingdom within Iran. Iran came to be known as Persia in the West thanks to classical Greek authors during whose time Persia was the dominant kingdom in Iran. To call all of Iran 'Persia', would be like calling all of Britain 'England'.