(a) the present number of vacant posts of senior and deputy engineers in the Railways;
(b) whether most of these vacant posts are reserved for Scheduled Castes (SCs), Scheduled Tribes (STs) and Other Backward Castes (OBCs), if so, the details thereof;
(c) the total number of backlog vacancies belonging to SCs and STs category in Group-A and B Posts, as on 31st March, 2015;
(d) the number of backlog vacancies filled up during April, 2014 to March, 2015 in Group A, B, C and D posts; and
(e) the time by which the Government proposes to fill up these posts?