Oil and fat containing food items are flushed with nitrogen. Why?
Explain the following terms with one example each.
A packet containing chips was found damped when kept open for 5 days.
Assertion: Chips manufacturers usually flush bags of chips with gas such as nitrogen. Reason: Nitrogen gas prevents the oil and fats of the chips from being oxidized.
Uzma peeled and cut some potatoes and left them in an open bowl. After a few minutes, she observed that the cut potato pieces had turned brown. Radhika also peeled and cut some potatoes. She kept the cut potato pieces immersed in a bowl of water. The potato pieces in water did NOT turn brown. Explain the difference in the reaction of the cut potato pieces in the two cases.
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