Bengaluru: Social and Educational Survey, popularly known as the 'caste census' in Karnataka, began on Monday, though the exercise may be delayed by a day or two in Greater Bengaluru area in order to impart training and ensure necesary preparations. He said the app used for the survey will not show these 33 castes with dual identities, with them being masked now. The BJP, which has accused the Congress government of conducting the survey "hastily" to "divide Hindus", has also questioned the need for the survey, when the Centre has already announced caste enumeration in the national census. The government had spent Rs 165.51 crore on an earlier Social and Educational Survey in 2015, which was later discarded. The Karnataka Cabinet on June 12 approved a fresh survey, effectively nullifying the 2015 exercise, citing Section 11(1) of the Karnataka State Commission for Backward Classes Act, 1995, which mandates a revision of the state backward classes list once every 10 years.