Multiple choice general knowledge The constitution of India was adopted by the Constituent Assembly on 26 Jan 1950 26 Nov 1949 26 Jan 1930 26 Oct 1949 25 Jan 1950 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The Constitution of India was adopted by the Constituent Assembly on 26 November 1949. It came into force on 26 January 1950, which is celebrated as Republic Day. 26 November is now observed as Constitution Day.