Article 335 of Constitution of India "Claims of Scheduled Castes and Scheduled Tribes to services and posts"
The claims of the members of the Scheduled Castes and the
Scheduled Tribes shall be taken into consideration,
consistently with the maintenance of efficiency of
administration, in the making of appointments to services
and posts in connection with the affairs of the Union or of
a State.
Article 336 of Constitution of India "Special provision for Anglo-Indian community in certain services"
(1) During the first two years after the commencement of this Constitution, appointments of members of the Anglo-Indian community to posts in the railway, customs, postal and telegraph services of the Union shall be made on the same basis as immediately before the fifteenth day of August, 1947.
During every succeeding period of two years, the number
of posts reserved for the members of the said community in
the said services shall, as nearly as possible, be less by
ten per cent than the numbers so reserved during the
immediately preceding period of two years:
Provided that at the end of ten years from the commencement
of this Constitution all such reservations shall cease.
(2) Nothing in clause (1) shall bar the appointment of
members of the Anglo-Indian community to posts other than,
or in addition to, those reserved for the community under
that clause if such members are found qualified for
appointment on merit as compared with the members of other
communities.