(a) whether a large number of vacancies/posts reserved for SCs,STs, and OBCs are being `de-reserved` and filled by other despite imposition of a ban on `de-reservation` of vacancies reserved for SCs, STs and OBCs with effect from 01.04.1989 by DOPT OM No.36012/6/88-Estt. (SCT) dated 25.04.1989;
(b) if so, the details thereof alongwith the reasons therefor; and
(c) the details of instances where vacancies/posts reserved for SCs, STs and OBCs have been de-reserved and filled by persons other than those for whom they were reserved since April 1, 1989 in his Ministry including all PSUs autonomous/statutory and attached as well as subordinate offices falling within its jurisdiction?