Q. When was the national anthem adopted in its Hindi version?
Answer: 24 January, 1950
Notes: The National Anthem of India Jana-Gana-Mana, composed originally in Bengali by Rabindranath Tagore, was adopted in its Hindi version by the Constituent Assembly as the National Anthem of India on 24 January, 1950. It was first sung on 27 December 1911 at the Kolkata Session of the Indian National Congress.