Khanna is a city and a municipal council in the Ludhiana district of the Indian state of Punjab. It is well known for being Asia's largest grain …Khanna is a city and a municipal council in the Ludhiana district of the Indian state of Punjab. It is well known for being Asia's largest grain market. It is a city which centers a national highway and buildings settled around a web of roads descending from National Highway to various State Highways to different Directions. It has a huge market place which attracts customers from all around the area, namely Guru Amardas Market.