A person can acquire citizenship of India by naturalization if he fulfils the following qualifications:
(a) Belongs to a country where the citizens of India are allowed to become subjects or citizens of that country by naturalizations.
(b) Renounces the citizenship of his country in accordance with the law of that country and intimates the renunciation to the Government of India.
(c) Has resided in India or has been in the government service in India for one year immediately before the date of his application for naturalization.
(d) During the seven years preceding the above mentioned one year, has resided in India or has been in the government service in India for a period extending not less than four years.
(e) Has an adequate knowledge of a language specified in the eighth schedule of the constitution.
The Citizenship Act, however, states that the conditions of “residence” or “knowledge of a language specified in the eighth schedule” may be waived in case of persons who have rendered distinguished service to the cause of science, philosophy, art, and literature or world peace.