Question

The sealed packets in which food items such as chips are sold are usually filled with nitrogen. How do you think that helps?

Answer 1

The sealed packets in which food items such as chips are sold are usually filled with nitrogen as nitrogen prevents the growth of microorganisms. Microorganisms need oxygen for their growth and survival. Nitrogen replaces all the oxygen in the packets, thus preventing the growth of microorganisms. In this way, the food items are prevented from being spoilt by microorganisms.