Lipids are organic molecules which are insoluble in:

Explanation

Option D is correct. Lipids are organic molecules that are insoluble in water. This is because lipids are non-polar molecules, while water is a polar molecule. Non-polar molecules do not dissolve in polar solvents, such as water. The solubility of lipids in alcohol depends on the structure of the lipid. Triglycerides have a very hydrophobic (water-fearing) structure, which makes them insoluble in alcohol. Phospholipids, on the other hand, have a more hydrophilic (water-loving) structure, which makes them soluble in alcohol. In general, lipids with shorter hydrocarbon chains are more soluble in alcohol than lipids with longer hydrocarbon chains. This is because the shorter hydrocarbon chains have more exposed hydrogen atoms, which can interact with the water molecules in the alcohol Lipids are organic molecules that are soluble in chloroform. Chloroform is a non-polar solvent, and lipids are also non-polar molecules. This means that the hydrophobic parts of the lipid molecules can interact with the hydrophobic parts of the chloroform molecules, allowing the lipids to dissolve in the chloroform. Lipids are organic molecules that are soluble in ether. Ether is a non-polar solvent, and lipids are also non-polar molecules. This means that the lipids can interact with the ether molecules through van der Waals forces.