When was our National Anthem first sung and where?

When was our National Anthem first sung and where? Correct Answer 27th December 1911 in Calcutta

Our National Anthem was first sung in Calcutta Session of the Indian National Congress on 27 December 1911. It was composed by Nobel laureate Rabindranath Tagore. 

Related Questions

You are in a cinema. The national anthem is played before the movie. Even when the national anthem is going on, some college students sit in the seats and talk. What would you do?