Question:
Which of the following fatty acids contribute maximum to the refractive index of milk fat?
Which of the following fatty acids contribute maximum to the refractive index of milk fat?
Show Hint
Refractive index: higher with unsaturation.
Linolenic acid: highest unsaturation.
Contributes most to RI.
Linolenic acid: highest unsaturation.
Contributes most to RI.
Updated On: Aug 18, 2026
- Linolenic acid
- Stearic acid
- Palmitic acid
- Butyric acid
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Refractive index depends on the degree of unsaturation.
Unsaturated fatty acids have higher refractive indices.
Step 2: Key Formula or Approach:
Refractive index \(\propto\) unsaturation.
Step 3: Detailed Explanation:
Linolenic acid (C18:3) has the highest unsaturation.
It contributes maximum to the refractive index.
Stearic acid (C18:0) and palmitic acid (C16:0) are saturated.
Butyric acid (C4:0) is short-chain saturated.
Thus, linolenic acid contributes maximum.
Step 4: Final Answer:
Linolenic acid contributes maximum to the refractive index.
Hence, the correct option is (A). \bigskip
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