In a major reshuffle, President Ram Nath Kovind on Sunday appointed governors in five states - Maharashtra, Telangana, Kerala, Himachal Pradesh and Telangana.
BJP leader Kalraj Mishra, transferred from Himachal Pradesh, will now move to Rajasthan. Former Union Minister Arif Mohammed Khan has been appointed as the Governor of Kerala.
BJP leader Bandaru Dattatreya has been given the responsibility for Himachal Pradesh.
Fifty-eight-year-old Soundararajan, the former Tamil Nadu BJP chief and the party's national secretary, moves to Raj Bhavan in Telangana.
The post was under the dual charge of E S L Narasimhan, who was the Governor of Andhra Pradesh before its bifurcation. He recently demitted office.
Koshyari replaces Vidya Sagar Rao, whose five-year term came to an end.
Former civil aviation minister Khan takes over as the Governor of Kerala, replacing P Sathasivam, the former chief justice of India whose five-year term came to an end.