Biology Biomolecules AJK 2019
PMDC Verified Question 122 of 142
Lipids are organic molecules which are insoluble in:
A
Alcohol
B
Ether
C
Chloroform
D
Water
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Water
Concept:

The universal solvent rule: "Like dissolves like."

Solution:

  • Lipids are fundamentally defined by their predominantly non-polar, hydrophobic hydrocarbon structures.


  • Water is a highly polar, hydrogen-bonding solvent.


  • Because water energetically prefers to bond with itself rather than non-polar molecules (hydrophobic exclusion), lipids are famously insoluble in water.


Why other options are incorrect:

  • Alcohol, Ether, and Chloroform: These are classic non-polar or weakly polar organic solvents. Lipids readily dissolve in them.

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