Question

Self-cooling cans use endothermic chemical reactions.

(a) True

(b) False

The question was posed to me in unit test.

My question is based upon Active Packaging in Food topic in section Modern Packaging Techniques of Food Packaging Technology

Answer 1

The correct answer is (a) True

To explain I would say: The given statement is true. Self-cooling cans use endothermic chemical reactions; the latent heat of evaporating water is often used to produce the cooling effect. One example is dissolution of ammonium nitrate and chloride in water to cool the product. Self-cooling packages are commercially available for cooling of food materials e.g., non gas drinks.