Question

Name the phenomenon due to which the taste and smell of oily food changes when kept for a long time in open. Suggest a method to prevent it.

Answer 1

The phenomenon due to which the taste and smell of oily food changes when kept for a long time in open is RANCIDITY.
It can be prevented by keeping the food in air tight containers or in refrigerator.

Answer 2

Answer:

Explanation:

Concept:

Rancidity:

In chemistry, a condition known as rancidity, also known as rancidification, is brought on by the aerial oxidation of unsaturated fat found in foods and other items that have off-putting flavours or odours. Unsaturated parts of a fatty substance can become hydroperoxides when exposed to sunlight, which then decompose into esters, volatile aldehydes, ketones, alcohols, and hydrocarbons, some of which have foul odours.

Using some preventative measures, rancidity can also be avoided.

Rancidity is the phenomena that causes greasy food to change in flavour and odour when left out in the open for an extended period of time.

Suggest a method to prevent it.

By storing the food in a refrigerator or other airtight container, it can be avoided.

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