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The number of milligrams of KOH required for the saponification of one gram of oil or fat is called ____________

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The number of milligrams of KOH required for the saponification of one gram of oil or fat is called ____________

(a) Acid number

(b) Iodine number

(c) Richert-Meissl number

(d) Saponification  number

I got this question in an internship interview.

Asked question is from Oils and Fats topic in chapter Industrially Important Materials of Engineering Chemistry II

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The correct choice is (d) Saponification  number

Easy explanation: The number of milligrams of KOH required for the saponification of one gram of oil or fat is called saponification number. The long chain fatty acids found in fats have a low saponification value because they have a relatively fewer number of carboxylic functional groups per unit mass of the fat as compared to short chain fatty acids.

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