What happens when drying oils are exposed to | vedclass

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(A) Drying oils are oils that transform into hard solids upon exposure to air and light,such as linseed oil.These oils contain a high proportion of un

Vedclass · Accepted Answer

Polymerization

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(A) Drying oils are oils that transform into hard solids upon exposure to air and light,such as linseed oil.These oils contain a high proportion of unsaturated fatty acids,specifically linoleic acid $(C_{17}H_{31}COOH)$ and linolenic acid $(C_{17}H_{29}COOH)$.When exposed to oxygen and light,these unsaturated bonds undergo oxidative polymerization,leading to the formation of a tough,solid film.This property is widely utilized in the paint industry,where these oils serve as a vehicle or binder for paints.

Column-$I$	Column-$II$
$(1)$ Stearic acid	$(a)$ $CH_3-(CH_2)_2COO^-$
$(2)$ Butyric acid	$(b)$ $CH_3-(CH_2)_{16}COO^-$
$(3)$ Palmitic acid	$(c)$ $R-COOH$
$(4)$ Fatty acid	$(d)$ $CH_3(CH_2)_{14}COO^-$

What happens when drying oils are exposed to light and moist air?

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Match the following columns correctly:

Column-$I$ Column-$II$

$(1)$ Stearic acid $(a)$ $CH_3-(CH_2)_2COO^-$

$(2)$ Butyric acid $(b)$ $CH_3-(CH_2)_{16}COO^-$

$(3)$ Palmitic acid $(c)$ $R-COOH$

$(4)$ Fatty acid $(d)$ $CH_3(CH_2)_{14}COO^-$

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