a) Oil and fat containing food items are flushed with nitrogen. Why? b) Write the balanced chemcial equations for the following reactions. i) Calcium hydroxide + Carbondioxide to Calcium carbonate + water ii) zinc + Silver nitrate to Zic nitrate + silver iii) Aluminium + copper chloride to Aluminium chloride + Copper

a) Oil and fat containing food items are flushed with nitrogen. Why? b

1.	a) Oil and fat containing food items are flushed with nitrogen. Why? b) Write the balanced chemcial equations for the following reactions. i) Calcium hydroxide + Carbondioxide to Calcium carbonate + water ii) zinc + Silver nitrate to Zic nitrate + silver iii) Aluminium + copper chloride to Aluminium chloride + Copper
Answer» Solution :To prevent the oxidation of oil and fat present in food ITEMS. nitrogen gas is flushed in food packets products formed due to oxidation of oil and fat have unpleasant SMELL and taste due to rancidity. Flushing food items containing .fat and oil with nitrogen prevents rancidity. B) i) `Ca(OH)_(2(aq))+ CO_(2(g)) to CaCO_(3(s)) + H_2 O_((L))` ii) `Zn_((s)) - 2AgNO_3 to Zn(NO_3)_(2(aq)) + 2Ag_((s))` iii) `2Al_((s)) + 2CuCl_(2(aq)) to 2AlCl_(3(aq)) + 3Cu`