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Potato Chips manufacturers usually flush bags of chips with some gas to prevent the chips from getting oxidised. Which of the following gases is used for the purpose :

Potato Chips manufacturers usually flush bags of chips with some gas to prevent the chips from getting oxidised. Which of the following gases is used for the purpose : Correct Answer Nitrogen

The correct answer Nitrogen

Key Points

  • Oil and fat containing food items are flushed with nitrogen because the food containing fats and oil becomes rancid after some time because of oxidation and gives a smell having a bad taste. Hence, option 3 is correct
    • The presence of nitrogen helps food to save from rancidity.
    • The potato chips manufacturer uses nitrogen gas to flush the chips bags to prevent the chips from getting oxidized in presence of oxygen from the atmosphere.
    • When fats and oils are oxidized they become rancid and their smell and taste change.

Additional Information

  • Hydrogen can be used in fuel cells to generate electricity, or power, and heat. hydrogen is most commonly used in petroleum refining and fertilizer production, while transportation and utilities are emerging markets. Hence, option 1 is incorrect
  • Sulfur dioxide (traditional Commonwealth English) is the chemical compound with the formula SO2. Hence, option 2 is incorrect.
    • It is a toxic gas responsible for the smell of burnt matches. It is released naturally by volcanic activity and is produced as a by-product of copper extraction and the burning of sulfur-bearing fossil fuels.
    • Sulfur dioxide has a pungent smell like nitric acid.
  • Carbon dioxide is an important trace gas in Earth's atmosphere nearly constitutes about 0.03% of the atmosphere. Hence, option 4 is incorrect
    • Being its relatively small concentration, CO2​ is a potent greenhouse gas and plays an essential role in regulating Earth's surface temperature through the radiative process and the greenhouse effect.

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