Question

Explain the following terms with one example each. (a) Corrosion (b)Rancidity. class 10​

Answer 1

Corrosion - The process in which metals are eaten up gradually by the action of air,moisture or a chemical(such as an acid)on their surface.
For ex - Rusting of iron.

Rancidity - The Condition produced by aerial oxidation of fats and oils in food marked by unpleasant smell and taste.
For ex - when potato chips are kept opened for a long time,they start giving unpleasant smell and taste and turn rancid.


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Answer 2

Answer:

Corrosion: It is a process where materials, usually metals, deteriorate as a result of a chemical reaction with air, moisture, chemicals, etc.

For example:

Iron in the presence of moisture, reacts with oxygen to form hydrated iron oxide.

4Fe + 3O2 + nH2O → 2Fe2O3.nH2O

Rancidity: It is the process of oxidation of fats and oils with oxygen or air that can be easily noticed by the change in taste and smell.

For example: the taste and smell of curd changes when kept for long.