Answers

2014-06-08T19:31:43+05:30
Corrosion -it is the slow heating up of metals by the action of air and moisture .
Rancidity- if oils or fats or food can oil or fat are exposed to air get oxidised due to the food get smell and bad taste.

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2014-06-08T19:39:19+05:30
Rancidity-when food containing oil or fats is left as such for a long time it develops a bad taste and smell particularly in summer.                                                                        corrosion-the effect on metals due to action of air or moisture
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