Question

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.