Why does not aqua regia burn filter paper? We were doing basic radical analysis in lab and we were asked to add aqua regia on the filtered PPT collected on the filter paper and collect the formed solution , my question is if aqua regia can dissolve even gold and platinum why didn't it burned the filter paper(or made holes in it )
For "burning" of paper by sulphuric acid, the better term would be "aggressive dehydration".

Note that aqua regia is rather a diluted acidic mixture without significant dehydrating or oxygen based oxidation behaviour, but manifests aggressive chloration behaviour, that dissolves precise metals.

Cellulose has quite good endurance against chlorine, which is used in various solutions for cellulose whitening.