Q. Consider the following: 

1. PIO Card Holder 
2. NRI 
3. Overseas Citizens of India

Which among the above would require to register with authorities if their stay exceeds 6 months in India?

Answer: Only 1
Notes: The correct answer is "Only 1 & 3." 1. PIO Card Holder: Persons of Indian Origin (PIO) must register if their stay exceeds 180 days (6 months) in India. 2. NRI: Non-Resident Indians (NRIs) do not need to register regardless of their stay duration. 3. Overseas Citizens of India (OCI): OCI cardholders also need to register if their stay exceeds 180 days. Trivia: The PIO card was merged with the OCI card in 2015, simplifying the process for individuals of Indian origin living abroad.