Harsh Vardhan Lodha has been appointed the chairman of Birla Corp "unanimously" by the board of directors, a company statement said here Friday. Harsh Vardhan Lodha, son of the late chairman R.S. Lodha, served the company as the director till now. R.S. Lodha was the disputed beneficiary of the M.P. Birla group chairperson Priyamvada Birla’s will that bequeathed the entire assets of the group to him.