Question

Oil and fat containing food items are flushed with which of the following gases?
1. Nitrogen
2. Hydrogen
3. Neon
4. Argon

Answer 1

Correct Answer - Option 1 : Nitrogen

The correct answer is Nitrogen.

• Nitrogen is used to flush oil and fat-containing food items.
• The food items which contain oil and fat get stale due to oxidation by air or oxygen.
• In order to prevent oxidation or rancidity, the container or bag is flushed with nitrogen.

• Nitrogen is an element with the atomic symbol N and atomic number 7. 
• Nitrogen appears as a colourless and odourless gas.
• It is easily soluble in water.
• It is used to freeze foods, to preserve blood and other biologicals, and also as a coolant.