Which of the following helps in the classification of oils into drying, semi-drying and non-drying categories?

Which of the following helps in the classification of oils into drying, semi-drying and non-drying categories? Correct Answer Iodine number

Iodine number helps in the classification of oils into drying, semi-drying and non-drying categories. Iodine numbers are often used to determine the amount of unsaturation in fatty acids. This unsaturation is in the form of double bonds, which react with iodine compounds. The higher the iodine number, the more C=C bonds are present in the fat.

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Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?