Which of the following statement is incorrect for fats containing unsaturated fatty acid?
Correct answer: C. They are usually solid at room temperature
- A. They are lighter than water
- B. They contain double bonds
- C. They are usually solid at room temperature
- D. Their specific gravity is less than one
Explanation
Fats containing unsaturated fatty acids are generally liquid at room temperature because the double bonds introduce kinks in the fatty acid chains, preventing them from packing closely together. This property contrasts with saturated fats, which are solid at room temperature due to their ability to pack tightly without double bonds. Therefore, the statement that they are usually solid at room temperature is incorrect. Options stating that they contain double bonds and have specific gravity less than one are true characteristics of unsaturated fats, while the statement about being lighter than water is generally true for all fats.
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