The correct answer is 1935. The Reserve Bank of India was established in 1935. RBI is known as the 'Central Bank of India' whose primary function is to regulate the issue of Banknotes and keeping of reserves with a view to securing monetary stability in India and generally to operate the currency and credit system of the country. RBI is also known as 'Apex Bank of India'. RBI is also known as 'Banker's Bank'. ?Additional Information RBI was set up on the recommendation of the Hilton Young Commission also called the Royal Commission in 1926. RBI Act was passed in the year - 1934RBI was established on 1st April 1935. RBI was nationalized on 1st January 1949. RBI issues all currency notes except one rupee. The signature of the RBI Governor on the notes is in English and Hindi. The currency notes except one rupee hold the signature of the RBI Governor. One rupee holds the signature of the Finance Secretary. The first Governor of RBI - Sir Osborne SmithThe first Indian Governor of RBI - C. D. DeshmukhThe longest-serving RBI Governor - Benegal Rama RaoThe Indian Prime Minister who had served as RBI Governor - Dr Manmohan SinghPresent and 25h Governor of RBI - Shakthikanta DasDeputy Governors of RBI - B. P. Kanungo, S. M. K Jain, M. D. Patra, and M. R. Rao. Headquarter - Mumbai