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Engineering Exams RRB-JE CMA (Chemical and Metallurgical Assistant) Technical Abilities 2025 22.04.25 Paper-2 Shift-1 Easy +1 -0.33
A packet of potato chips contains nitrogen gas. Why is nitrogen gas used instead of oxygen?
Correct Answer: B. Nitrogen prevents oxidation and rancidity.
Explanation: Nitrogen gas is used in potato chip packaging because it is an inert gas that displaces oxygen, thereby preventing the oxidation of fats and oils. This process stops the chips from becoming rancid and helps maintain their crispness and flavor for a longer period. Unlike oxygen, which facilitates spoilage, nitrogen provides a protective atmosphere that extends the shelf life of the product without reacting with the food.
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