(a) Whether a large number of vacancies/posts reserved for SCs, STs and OBCs are being
`dereserved` and filled by `others` despite imposition of a ban on `dereservation` of such vacancies;
(b) if so, the reasons therefor; and
(c) the details of instances where vacancies/posts reserved for SCs, STs and OBCs have been
dereserved and filled by other persons since April 1, 1989 under his Ministry?