Who had presided over the inaugural session of the "All India Trade Union Congress" held in 1920?

Who among the following had presided over the All India Trade Union Congress held at Nagpur in 1929?

Who was the first President of All India Trade Union Congress?

Who was elected the first President of the All India Trade Union Congress (AITUC) October 31, 1920?

When was All India Trade Union Congress established in Bombay?

Which one among the following was India's first trade union in the proper sense of the term?