In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of: (a) Cl2 (b)H2 (c)N2 (d) O2

Option (c) is the answer. If food items are packed in plastic bags in an atmosphere of nitrogen gas it does not spoil as nitrogen is an inert gas and does not react with the things. This is done to prevent the oxidation of fatty acids and oils present in the chips