(a) whether a large number of vacancies/posts reserved for SCs, STs and OBCs are being `de-reserved` and filled by `others` despite imposition of a ban on `de-reservation` of vacancies reserved for SCs, STs and OBCs with effect from April, 1989 by DOPT OM No. 36012/6/88-Estt(STC) dated April 25, 1989;
(b) if so, 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?