Article 9 of the Indian Constitution deals with the termination of Indian citizenship. According to this provision, any person who voluntarily acquires the citizenship of another country is deemed to have ceased to be an Indian citizen.
In other words, if an Indian citizen acquires the citizenship of another country of their own free will, then they automatically lose their Indian citizenship. It is important to note that this provision applies only to voluntary acquisition of foreign citizenship; if a person is forced to acquire foreign citizenship due to circumstances beyond their control, they do not lose their Indian citizenship.
It is also worth noting that the Indian Citizenship Act, 1955 provides for certain situations in which citizenship may be revoked or cancelled by the government, such as if the person obtained citizenship by fraud or if they have been convicted of certain offenses. However, such revocation or cancellation is subject to strict procedural safeguards and judicial review to ensure that it is not arbitrary or discriminatory.