He described the report, which did not mention the 2035 error, as "voodoo science".
However, a prominent science journalist said that he had asked Dr Pachauri about the 2035 error last November.
Pallava Bagla, who writes for Science journal, said he had asked Dr Pachauri about the error.
He said that Dr Pachauri had replied, "I don't have anything to add on glaciers."
Bagla said he had informed Dr Pachauri that Graham Cogley, a professor at Ontario Trent University and a leading glaciologist, had dismissed the 2035 date as being wrong by at least 300 years.
Professor Cogley believed the IPCC had misread the date in a 1996 report that said the glaciers could melt significantly by 2350.
Source-ANI
THK