Question

Reema is fond of cheese. She took stale vegetable from the refrigerator and started eating it. She observed the taste and smell of spoiled staled vegetable. She asked her mother to taste the vegetable. Her mother tasted it and asked her not to eat. Reema asked her mother some questions :

(i) Why does the food get spoiled ?

(ii) How the spoilage of food can be prevented ?

(iii) How chips are packed in packets for so days?

Answer 1

(i) When fats and oils are oxidised, they become rancid and their smell and taste changes.

(ii) To prevent spoilage of food, special types of substances called antioxidants are added to fatty foods.

(iii) Chips are packed in packets flushed with nitrogen to prevent spoilage by oxidation