Exemption under section 35AC extended for charitable ambulance rural medical programme, preserving eligibility for tax relief. The Central Government, acting under the statutory provision for specification of eligible projects, on recommendation under sub rule (5) of rule 11M, specifies the ambulance van rural medical help programme at Dhankot Village carried out by Om Indu Jain Charitable Trust as an eligible project for a further period commencing with the stated assessment year, at the estimated project cost, thereby extending its tax exempt status.