Answer :


(a) Corrosion: Gradual Deterioration of metals by the action of :-
1.Air
2.Moisture 
3.Chemical( such as an acid) on their surface.
Main Cause of corrosion is the oxidation of metals by the oxygen of air.
Example:- Rusting of Iron - When a piece of Iron is left out in damp time for a period of time it gets covered with a red-brown substance called rust.
The following reaction takes place resulting in then formation of rust:-


(b) Rancidity:- Oxidation of Fats and Oils present in food materials by the oxygen present in air resulting in unpleasant smell and taste is called Rancidity. This makes the food not fit for eating.
Example:- Potato Chips that are cooked in oil turn Rancid and give out unpleasant smell and taste if kept exposed for a long time

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

<span lang="EN-USScience - Board Papers

<span lang="EN-USScience - Board Papers

Describe two examScience - Board Papers

What is an oxidizScience - Board Papers

Name the oxidisinScience - Board Papers

Name the oxidizinScience - Board Papers

<span lang="EN-USScience - Board Papers