Question : Which of the following does not behave as a surfactant ?

(1) Soap

(2) Detergent

(3) Phospholipid

(4) Triglycerides

Answer : from all above options the correct answer is “(4) Triglycerides” For a molecule to behave as surfactant, it should have both hydrophobic and hydrophilic parts , triglycerides do not fulfill the criteria. surfactant are those substances which are used to clean the dirt from the surfaces are called surfactant. so we can say that Triglycerides does not behave as a surfactant that is why we have marked this option for correct answer.

Explanation of answer : as we know that for surfactant , the substance should contain polar and non polar parts and in above all options the Triglycerides substance does not contains does not have polar and non polar parts that is why Triglycerides does not behave as a surfactant and this is the reason we have given this option for correct answer as per question requirement.