On 31st December, 1929, in which one of the following Congress Sessions was the proclamation of Purna Swaraj made?

The proclamation of Purna Swaraj (Complete Independence) was made during the historic Lahore Session of the Indian National Congress in December 1929 [2]. Under the presidency of Jawaharlal Nehru, the Congress formalised the demand for full independence, shifting its objective from Dominion Status to total self-rule [4]. On the night of 31st December 1929, the tricolour flag of freedom was hoisted by Nehru on the banks of the Ravi River in Lahore to mark this momentous resolution [4]. The session further decided that 26th January 1930 would be observed as 'Independence Day' across India, where citizens would take a pledge to struggle for complete independence [4]. This declaration eventually led to the launch of the Civil Disobedience Movement under Mahatma Gandhi's leadership [3].

Sources

1. [1] Modern India ,Bipin Chandra, History class XII (NCERT 1982 ed.)[Old NCERT] > Chapter 15: Struggle for Swaraj > Poorna Swaraja > p. 286
2. [2] History , class XII (Tamilnadu state board 2024 ed.) > Chapter 4: Advent of Gandhi and Mass Mobilisation > Lahore Congress Session-Poorna Swaraj > p. 51
3. [4] India and the Contemporary World – II. History-Class X . NCERT(Revised ed 2025) > Chapter 2: Nationalism in India > 3 Towards Civil Disobedience > p. 39
4. [3] India and the Contemporary World – II. History-Class X . NCERT(Revised ed 2025) > Chapter 2: Nationalism in India > May 1924 > p. 42