Question

Define roasting calibration rancidity

Answer 1

Roasting is a process in metallurgy in which a sulfide ore is heated in air

Calibration is a comparison between a known measurement (the standard) and the measurement using your instrument

Rancidity is the complete or incomplete oxidation or hydrolysis of fats and oils when exposed to air, light, moisture or by bacterial action, resulting in unpleasant taste and odor.

Answer 2

Roasting is a process of heating of sulfide ore to a high temperature in presence of air. 
Calibration is a comparison between a known measurement (the standard) and the measurement using your instrument. 
Rancidity:-In simple term, it is the spoilage-of food where it becomes unsafe for the consumption. Rancidity changes the food color,odor and flavor. 
hope this may help.......
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