1 A candidate must be either :
- A citizen of India
- A subject of Nepal
- A subject of Bhutan
- A Tibetan refugee who came over to India before the 1st January 1962 with the intention of permanently settling in India
- A person of Indian origin who has migrated from Pakistan, Burma, Sri Lanka, East African countries of Kenya, Uganda, the United Republic of Tanzania (Formerly Tanganyika and Zanzibar), Zambia, Malawi, Zaire, Ethiopia and Vietnam with the intention of permanently setting in India.
2 Provided that a candidate belonging to categories (b), (c), (d) and (e) above shall be a person in whose favour a certificate of eligibility has been issued by the Government of India.
3 A candidate in whose case a certificate of eligibility is necessary may be admitted to the examination but the offer of appointment will be given only after the necessary eligibility certificate has been issued to him/ her by the Government of India.