Prices of oil and fats surged by 17.92% and cereals became costlier by 11.82%.
The price rise was sharper in rural areas. The CPI-based inflation for rural areas increased 9.98% in October as compared to 9.79% in the previous month.
However, for urban areas consumer price inflation moderated to 9.46% in October as compared to 9.72% in the previous month.
Vegetables became costlier by 13.71% year-on-year in rural areas while in urban areas the increase was 4.16%.
Prices of oils and fats increased by 18.69% in rural areas while it increased by 16.27% in urban areas.
Inflation has remained at an elevated level despite a tight monetary policy adopted by the Reserve Bank of India.
In the second quarter review of monetary policy for 2012-13 announced at the end of last month, the RBI kept key lending and borrowing rates unchanged, saying inflation remained sticky and might rise further in the third quarter of the current financial year.
The RBI has revised upward its projection for wholesale price index based inflation to 7.5% from its earlier estimate of 7% announced in July.
The wholesale price index based inflation had risen to 10 month high of 7.81% in September, according to the latest official figures.