Kjeldahl's method cannot be used to estimate nitrogen for which of the following compounds?

In a Carius tube,an organic compound '$X$' is treated with sodium peroxide to form a mineral acid '$Y$'. The solution of $BaCl_2$ is added to '$Y$' to form a precipitate '$Z$'. '$Z$' is used for the quantitative estimation of an extra element. '$X$' could be:

Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from $0.55 \ g$ of the compound neutralized $12.5 \ mL$ of $1 \ M \ H_2SO_4$ solution. The percentage of nitrogen in the compound is $.....$ (Nearest integer).

Match Column-$I$ and Column-$II$ with the correct relation:

Column-$I$	Column-$II$
$(i).$ Magnesium pyrophosphate	$(a).$ $I_2O_5$
$(ii).$ Barium sulphate	$(b).$ $AgX$
$(iii).$ Iodide pentoxide	$(c).$ $Mg_2P_2O_7$
$(iv).$ Silver halide	$(d).$ $BaSO_4$

Which of the following is a $FALSE$ statement?

In $Duma's$ method of estimation of nitrogen,$0.35 \ g$ of an organic compound gave $55 \ mL$ of nitrogen collected at $300 \ K$ temperature and $715 \ mm$ pressure. The percentage of nitrogen in the compound is (aqueous tension at $300 \ K = 15 \ mm$). (in $.45$)