Correct Option
Statement 1 is correct. India follows the system of single citizenship, meaning an individual is a citizen of India and not of any specific state. The concept of domicile in India refers to the place where a person has their permanent home, but it does not imply separate state citizenship. The Constitution of India establishes a uniform citizenship for the entire nation.
Incorrect Options
Statement 2 is incorrect. In India, any citizen, whether by birth or by naturalization, is eligible to become the Head of State (the President of India). The Constitution of India does not differentiate between citizens by birth and naturalized citizens for holding the office of President, unlike some other countries like the USA where only a natural-born citizen can become the Head of State.
Statement 3 is incorrect. A foreigner who has been granted Indian citizenship can be deprived of it under specific circumstances as outlined in the Citizenship Act, 1955. Grounds for deprivation include obtaining citizenship by fraud, disloyalty to the Constitution, unlawful communication with an enemy during war, or being ordinarily resident out of India for a continuous period of seven years without registering annually at an Indian consulate. Therefore, citizenship is not absolute and can be revoked.