Q. In which session of Indian National Congress (INC) the National Anthem 'Jana Gana Mana' sung first time?
Answer: Calcutta session of 1911
Notes: The National Anthem 'Jana Gana Mana', penned by Nobel Laureate Rabindranath Tagore, was first sung at 1911 Calcutta Session of the Indian National Congress (INC). The song was adopted as the India's national anthem by the Constituent Assembly on January 24, 1950.

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