NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
Railways PYQCBT 1 2016

RRB NTPC · Question 32

To prevent rancidity of oil (due to oxidation) in which potato chips are fried, the bags of chips are flushed with the gas-

  1. Oxygen

  2. Hydrogen

  3. Nitrogen

  4. Chlorine

Show answer & explanation

Answer: (C) Nitrogen

Explanation

Chip packets are flushed with nitrogen, an unreactive gas, to push out oxygen. Without oxygen the fats in the chips cannot oxidise and turn rancid, and the gas also cushions the chips.