Question

A metal can is a ________ package.

(a) primary

(b) secondary

(c) tertiary

(d) quaternary

This question was addressed to me in exam.

Question is taken from Metal as Packaging Material topic in portion Metal Packaging Materials of Food Packaging Technology

Answer 1

Right option is (a) primary

To elaborate: A metal can is a primary package. The package which is in direct contact with the contained product, providing initial and most crucial protective barrier is known as a primary package. Its main function is containment.