Question

Maya’s aunt was visiting her house after long time. Maya’s mother fried

a lot of snacks for her aunt. Suddenly she came to know that her aunt

has postponed her plan for tomorrow. Maya’s mother got worried to know this. She thought that fried food will be spoiled. Maya help her mother to preserve the food.

i)What happens when food materials containing fats and oil left for long time? List two observable changes​

Answer 1

Answer:

When food materials containing fats and oils are left for a long time they become rancid.

Observable changes –

1. Change in taste..

2. Change in smell..

Three ways of prevention :-

i) Addition of antioxidants / substance which prevent oxidation.

ii) Keeping food in air tight containers.

iii) Use of nitrogen gas in packaged food..

Explanation:

Hope it is helpful..