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Which of the following is not saponifiable?

(a) Ground nut oils

(b) Mineral oils

(c) Castor oil

(d) Coconut oil

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I want to ask this question from Saponification Value topic in section Lubricants of Applied Chemistry

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Right option is (b) Mineral oils

For explanation: The castor oil, coconut oil and the ground nut oil are saponifiable. The mineral oils are not saponifiable. They are mixtures of hydrocarbons and do not react with KOH. So, they are not saponifiable.

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