 annexure extract from the constitution of india  i      prohibition of discrimination 15 (1) the state shall not discriminate against any citizen on grounds only of religion, race, caste, sex, place of birth or any of them b        on grounds of religion, race, caste, sex or place of birth (4) nothing in this article or in clause (2) of article 29 shall prevent the state from making any special provision for the advancement of any socially and educationally backward classes of citizens or for the scheduled castes and the scheduled tribes equality of opportunity in matters of pub- 16 (1) there shall be equality of opportunity for all citizens in matters relating to employment or appoiritment to any office under the state lic employment,        (4a) nothing in this article shall prevent the state from making any provision for reservation in matters of promotion to any class or classes of posts in the services under the state in favour of the scheduled castes and scheduled tribes which, in the opinion of the states, are not adequately represented in the services under the state         ninth schedule (article 31b)       amendment of the ninth schedule 257a the tamil nadu backward classes, scheduled castes and scheduled tribes (reservation of seats in educational institutions and of appointments or posts in the services under the state) act, 1993       