Question

The filler gas used in wine cans is _______

(a) O2

(b) He

(c) CO2

(d) N2

I have been asked this question in an interview.

This question is from Food Packaging Materials topic in section Food Packaging Materials, Packaging Standards and Regulation Laws of Food Packaging Technology

Answer 1

Right choice is (d) N2

The explanation is: The filler gas used in wine cans is N2. It is necessary to increase the internal pressure in the cans to prevent collapse. Internal pressure is approximately 170kPa.