Article 330 of Constitution of India "Reservation of seats for Scheduled Castes and Scheduled Tribes in the House of the People"
(1) Seats shall be reserved in the House of the People
for-
(a) the Scheduled Castes;
(b) the Scheduled Tribes except the Scheduled Tribes in the
autonomous districts of Assam; and
(c) the Scheduled Tribes in the autonomous districts of
Assam.
(2) The number of seats reserved in any State [or Union territory] for the Scheduled Castes or the Scheduled Tribes under clause (1) shall bear, as nearly as may be, the same proportion to the total number of seats allotted to that State [or Union territory] in the House of the People as the population of the Scheduled Castes in the State [or Union territory] or of the Scheduled Tribes in the State [or Union territory] or part of the State [or Union territory], as the case may be, in respect of which seats are so reserved, bears to the total population of the State [or Union territory].
(3) Notwithstanding anything contained in clause (2), the
number of seats reserved in the House of the People for the
Scheduled Tribes in the autonomous districts of Assam shall
bear to the total number of seats allotted to that State a
proportion not less than the population of the Scheduled
Tribes in the said autonomous districts bears to the total
population of the State.
Explanation.- In this Article 332, the expression
"population" means the population as ascertained at the last
preceding census of which the relevant figures have been
published:
Provided that the reference in this Explanation to the last
preceding census of which the relevant figures have been
published shall, until the relevant figures for the first
census taken after the year 2000 have been published, be
construed as a reference to the 1971 census.