Chemistry - ALCOHOL & ETHER Question with Solution | TestHub

 Proton donors are acids. Among given choices ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}$ can give proton$\left({\mathrm{H}}^{+}\right)$ most easily.

$\therefore {\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}$ is most acidic among ${\mathrm{C}}_2{\mathrm{H}}_6,\mathrm{C}{\mathrm{H}}_4,$ $\mathrm{C}\mathrm{H}\equiv \mathrm{C}\mathrm{H}$ and ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}$