Question

Consider the following fatty acids:
1. Linolenic acid
2. Oleic acid
3. Palmitic acid
4. Stearic acid
Which of these is/are unsaturated fatty acids ?

• A. 2, 3 and 4
• B. 1 only
• C. 3 and 4
• D. 1 and 2

Answer 1

The correct option is D 1 and 2

Unsaturated fatty acids
Unsaturated fatty acids are those which have both single and double bonds between the carbon atoms in the fatty acid chain. These are liquids at room temperature. Some unsaturated fatty acids are:

●Oleic acid is a 18 carbon fatty acid chain with one double bond.
●Linolenic acid is a 18 carbon fatty acid chain with three double bonds.
Final answer
(2) 1 and 2