Due to public demand, Karnataka Sambhrama-50, the biggest consumer fair which is going on at Dasara Exhibition Grounds in city, has been extended till Sept. 1. The month-long expo, which began on July 25, was scheduled to conclude on Aug. 25.  This Consumer Expo, organised by Simon Exhibitors, marks the golden jubilee of renaming Mysore State as Karnataka on Nov. 1, 1973.  The expo will remain open for public between 4 pm and 9.30 pm.