One of the following does not belong to fatty acid........................
Ascorbic acid
Fatty acids are long hydrocarbon chains ending in a carboxyl group and are the building blocks of fats.
Stearic acid (C18, saturated) and palmitic acid (C16, saturated) are common saturated fatty acids, and oleic acid (C18, one double bond) is a monounsaturated fatty acid; all three are fatty acids.
Ascorbic acid is vitamin C, a water-soluble vitamin derived from sugars; it has no long hydrocarbon chain and is not a fatty acid.
Hence, the answer is Ascorbic acid.
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