Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

In H.V.Z reaction, in presence of small amount of phosphorus, aliphatic carboxylic acids containing $\alpha$-hydrogen atom reacts with ${\mathrm{Cl}}_2,{\mathrm{Br}}_2$ to yield an acid halide in which $\alpha$-hydrogen has been replaced by halogen. So, trichloroethanoic acid, among the given options which do not contains $\alpha$-hydrogen atom, will not give $\mathrm{HVZ}$ reaction.