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Semi-drying oil is ____________

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Semi-drying oil is ____________

(a) Linseed

(b) Soya bean oil

(c) Coconut oil

(d) Castor oil

I got this question during an online exam.

This key question is from Natural Products in section Natural Products of Chemical Technology

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Right choice is (c) Coconut oil

To explain I would say: Based on degree of unsaturation, oils are classified as drying oils and semi-drying oils. Examples of drying oils are linseed, soya bean, castor oil, Tung oil, and tall oil. Examples of semi-drying oils are coconut oil, tobacco seed etc.

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