Explanation:

Hisar is one of the five cities belonging to Sarasvati Valley Civilization while its name is cited in the history books in the context of Indus civilization and in general knowledge books as the location of Banawali, one of five sheep farms. As of 2011 it is the second most populous of the 21 districts of Haryana, after Faridabad.Hisar is also known as the steel city because of the Jindal Stainless Steel Factories. It is also the largest producer of galvanized iron in India.