Statement I : p^H of 0.1 M NH₄CN is equal to the p^H of 0.01 M NH₄CN.
Statement II : NaHCO₃ is an acidic salt.
 

Statement-I : ${\mathrm{p}}^{\mathrm{H}}(\text{ salt }\mathrm{WA}-\mathrm{WB})=7+\frac{1}{2}{\mathrm{P}}^{{\mathrm{k}}_{\mathrm{a}}}-\frac{1}{2}{\mathrm{P}}^{{\mathrm{k}}_{\mathrm{b}}}$
p^H is independent of concentration of salt 
Statement-II : ${\mathrm{NaHCO}}_3+\mathrm{NaOH}\to {\mathrm{Na}}_2{\mathrm{CO}}_3+{\mathrm{H}}_2\mathrm{O}$
NaHCO₃ has a replacable hydrogen atom. It is an acidic salt