License to run soft drink stall inside zoo - use of sale of food item and soft drinks in tetra pouches and poly bags inside zoo as they are hazardous to animals - license not renewed - policy adopted of not issuing/renewal of licence/lease to establish such counter inside zoo was to ensure health and welfare of animals is not unreasonable . [ Narasingh Podhiary vs State of Orissa . AIR 2001 Oris 176. P.C.Naik & P.K.Mohanty (JJ)]