Physical Properties of oils and Fats
(i) Fats are solids, whereas oils are liquids.
(ii) They are soluble in ether, chloroform and benzene but insoluble in water.
(iii) They have less specific gravity than water and consequently float on the surface when mixed with it.
(iv) Pure fats and oils are colourless, odourless and tasteless but natural fats and oils possess a characteristic odour due to presence of other substances.
(v) They have specific melting points, specific gravity and refractive index hence they can be identified by these oil constants.
(vi) Animal fats contain cholesterol, an unsaturated alcohol, whereas vegetable fats contains phytosterol.
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