Q.
Assertion: Arachidic acid is an unsaniratei fatty acid. Reason: There are present one or more double bonds between carbon atoms in unsaturated fatty acids.
Fatty acids which lack any double or triple bond in their hydrocarbon chain are known as saturated fatly acids. Example lauric acid, arachidic acid, myristic acid, palmitic acid, stearic acid etc in contrast to saturated fatty acids, unsaturated fatty acids have one or more double bonds between carbon atoms at fixed place along the hydrocarbon chain. Example palmitoleic acid, oleic acid, linoleic acid, linolenic acid, arachidonic acid etc.