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).

In the estimation of phosphorus in an organic compound,phosphorus is $NOT$ weighed in the form of which of the following substances?

State True or False for the following statements:
$(i)$ The volume of $N_2$ is measured by nitrometer.
$(ii)$ The weight of $N_2$ is measured by nitrometer.
$(iii)$ The weight of $NH_3$ is measured by nitrometer.
$(iv)$ The volume of $NH_3$ is measured by nitrometer.

$0.25 \ g$ of an organic compound containing chlorine gave $0.40 \ g$ of silver chloride in Carius estimation. The percentage of chlorine present in the compound is $.....$ [in nearest integer].
(Given: Molar mass of $Ag$ is $108 \ g \ mol^{-1}$ and that of $Cl$ is $35.5 \ g \ mol^{-1}$)

Given below are two statements $I$ and $II.$
Statement $I :$ Dumas method is used for estimation of Nitrogen in an organic compound.
Statement $II :$ Dumas method involves the formation of ammonium sulphate by heating the organic compound with conc $H_2SO_4$. In the light of the above statements,choose the correct answer from the options given below.

In sulphur estimation,$0.471 \ g$ of an organic compound gave $1.4439 \ g$ of barium sulphate. The percentage of sulphur in the compound is $.............$ (Nearest Integer) (Given: Atomic mass $Ba: 137 \ u, S: 32 \ u, O: 16 \ u$)