A mixture containing 9 grams of oxalic acid and 9.2 grams of formic acid  is treated with Conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$ . The evolved gaseous mixture is passed through Caustic potash. Number of atoms present in the remaining gaseous product will be $\left({\mathrm{N}}_{\mathrm{A} }=\mathrm{Avagadro}\text{'}\mathrm{s} {\mathrm{number}}^{ }\right)$

(i) $\begin{array}{l}46\mathrm{g} 28\mathrm{g}\\ \mathrm{HCOOH}\underset{\mathrm{\Delta }}{\overset{\mathrm{Conc}.{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}\mathrm{CO}+{\mathrm{H}}_2\mathrm{O}\\ 9.2\mathrm{g} 5.6\mathrm{g}\end{array}$
                                                   
(ii) $\begin{array}{l} \\ {\left(\mathrm{COOH}\right)}_2\hspace{0.17em}\underset{\mathrm{\Delta }}{\overset{\mathrm{Conc}.{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}\mathrm{CO}+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}\\ 90 \mathrm{gm} \mathrm{of} \mathrm{oxalic} \mathrm{acid} \mathrm{gives} 28\mathrm{gm} \mathrm{of} \mathrm{CO} \mathrm{and} 44 \mathrm{gm} \mathrm{of} {\mathrm{CO}}_2\\ 9 \mathrm{gm} \mathrm{of} \mathrm{oxalic} \mathrm{acid} \mathrm{gives} 2.8 \mathrm{gm} \mathrm{of} \mathrm{CO} \mathrm{and} 4.4 \mathrm{gm} \mathrm{of} {\mathrm{CO}}_2\\ \mathrm{Total} \mathrm{weight} \mathrm{of} \mathrm{CO} =5.6\mathrm{g} + 2.8\mathrm{g}\\ \mathrm{Total} \mathrm{weight} \mathrm{of} {\mathrm{CO}}_2 = 4.4\mathrm{g}\\ {\mathrm{CO}}_{2 }\mathrm{is} \mathrm{absorbed} \mathrm{by} \mathrm{caustic} \mathrm{potash} \\ \mathrm{Water} \mathrm{is} \mathrm{absorbed} \mathrm{by} \mathrm{conc}.{\mathrm{H}}_2{\mathrm{SO}}_4\\ \\ \end{array}$
 $$\begin{gathered} {\mathrm{W}}_{\mathrm{CO}} =8.4\mathrm{g} ; \\ 28\mathrm{g} \mathrm{of} \mathrm{CO} \mathrm{contain} 2{\mathrm{N}}_{\mathrm{A}} \mathrm{atoms} \\ 8.4\mathrm{g} \mathrm{of} \mathrm{CO} \mathrm{contain} 0.6{\mathrm{N}}_{\mathrm{A}} \mathrm{atoms} \end{gathered}$$