Solution:The above statement is false. It was not at Karachi but at the Lahore session that Congress adopted the resolution of Poorna Swaraj. The arrival of the Simon Commission in India to analyse the constitution's functioning and suggest changes angered all parties of India. Lord Irwin assured a grant of "dominion status" and round table conferences to win over the general masses to discuss the future constitution. It didn't satisfy Congress. In 1929, at the Lahore session, Nehru put forward Poorna Swaraj (complete independence) as the ultimate demand of Congress.
The correct statement would be that Poorna Swaraj's resolution was adopted at the Lahore session of Congress.