Fresh food containing fats and oils smells and tastes pleasant. But when it becomes stale on long exposure to air, it smells/tastes unpleasant and is no longer fresh. It is said that the food has become rancid. This change in the food is due to oxidation of fats and oils. Butter, ghee, boiled, rice, etc., become rancid after prolonged exposure to air.
Food materials can be protected from being stale by keeping them out of contact with water/moisture and air. This can be done in several ways.
(i) Some substances called antioxidants may be added to prevent oxidation of the food.
(ii) Food materials may be kept at a very low temperature. In many homes refrigerators are used to protect food from being oxidized.
Which of the following are correct : (a) Fresh food when it becomes stale on long exposure to air, it become rancid. (b) Some substances called antioxidants may be added to prevent oxidation of the food. (c) Food materials may be kept at a very low temperature to stop rancidity. | |||
Right Option : D | |||
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Food materials may be kept at a very _______________________ to protect from rancidity. | |||
Right Option : A | |||
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Which of the following are correct : (a) Some substances called antioxidants may be added to prevent oxidation of the food. (b) Food may be preserved in airtight containers. | |||
Right Option : C | |||
View Explanation |
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