Who was the president of the Lahore Congress session, which formalised the demand of ‘Purna Swaraj’ in 1929?
Jawaharlal Nehru correct for Gandhian era and Indian national movement as per NCERT Modern India.
Ref: NCERT History Class XII Theme 13 Mahatma Gandhi explains Gandhian era noncooperation swaraj Champaran Kheda Dandi March and mass movements.
