Senior Supreme Court Lawyer and Constitutional expert PP Rao (84) passed away at New Delhi on Wednesday due to cardiac arrest.He had completed 50 years of his legal practice in July 2017.A doyen of Constitutional Law,Senior Advocate P.P. Rao has been a natural successor to legends such as H.M. Seervai, M.C. Setalvad, C.K. Daphtary, N.C. Chatterjee, S.V. Gupte, A.K. Sen, Niren De, whom he...