The one which has least iodine value is

Options

A. Ginger oil
B. Ghee
C. Groundnut oil
D. Sunflower oil

Answer

B

Explanation

The degree of unsaturation of a fat or oil is measured by its iodine number which is defined as the number of grams of iodine that would add to carbon-carbon double bonds (C - C) present in 100 grams of the fat or oil. Hence, greater the number of double bonds in the acid residues of a triglyceride, greater will be the iodine number. Because a saturated fatty acid has no double bonds, it takes up no iodine, thus its iodine number is zero.
Among the given options, ghee has the least iodine value as it is saturated whereas the other compounds contain some degree of unsaturation.