Question

Which of the following compounds is soluble in benzene but insoluble in water?

• A. Ethanol
• B. Ethanoic acid
• C. Ethanal
• D. Toluene

Answer 1

The correct option is D Toluene

Arenes (aromatic hydrocarbons) are generally non polar in nature. So it will have higher solubility in non-polar solvents like benzene, and lower solubility in polar solvents like water.
Ethanal, ethanoic acid, and ethanal are polar in nature and can form hydrogen bonds with water and thus are more miscible.
So (d) toluene will be more soluble in non polar solvents like benzene or $CC{l}_4$.