Why Correct: The Citizenship Act, 1955 requires a person to have resided in India for at least 5 years immediately preceding the application date for citizenship by naturalization.
Distractor Analysis: 3 years applies to spouses of Indian citizens applying for citizenship by registration. 1 year has no basis in citizenship law. 12 years is the requirement for Overseas Citizenship of India (OCI) cardholders to be eligible for citizenship by registration.
Takeaway: For citizenship by registration, the required residence period varies from 0 years (for persons of Indian origin) to 7 years (for certain other categories like Commonwealth citizens).

Why Correct: The Indian Constitution provides for single citizenship, meaning every Indian is a citizen of India only, not of any separate state or province. This is unlike federal countries such as the USA where dual citizenship (national and state) exists.
Distractor Analysis: Dual citizenship refers to being a citizen of two sovereign nations, which India does not allow. Double citizenship for province and state would imply separate state citizenship, which does not exist in India. Multiple citizenship would be citizenship of more than two entities, also not provided.
Takeaway: Single citizenship is a unifying feature of Indian federalism, intended to promote national integration. It is enshrined in Part II (Articles 5-11) of the Constitution.

Why Correct: Article 9 of the Indian Constitution states that if any person voluntarily acquires the citizenship of a foreign state, they shall cease to be a citizen of India. This provision operates automatically upon voluntary acquisition of foreign citizenship, without requiring any separate order from the government.
Distractor Analysis: Article 7 deals with rights of citizenship of certain migrants to Pakistan, providing that those who migrated to Pakistan after 1 March 1947 but later returned to India under a permit for resettlement may regain citizenship. Article 8 deals with rights of citizenship of certain persons of Indian origin residing outside India, allowing those born in India or whose parents or grandparents were born in India to register as Indian citizens if they are ordinarily resident in a foreign country. Article 10 deals with continuance of the rights of citizenship, stating that every person who is or is deemed to be a citizen of India shall continue to be such, subject to the provisions of any law made by Parliament.
Takeaway: Articles 5 to 11 of the Constitution deal with citizenship at the commencement of the Constitution. Article 11 expressly empowers Parliament to regulate the right of citizenship by law, which led to the Citizenship Act, 1955, and its subsequent amendments.