The annual inflation rate rose marginally to 11.91 per cent for the week ended July 5, from 11.89 per cent the previous week, mainly due to a softening in prices of food products. On a week-to-week basis, the prices of primary articles were down 0.2 per cent, while that of basic metals and alloys went up by 0.7 per cent. The manufactured products index was up 0.3 per cent and chemicals by 0.5 per cent.