An organic compound gives $0.220 \ g$ of $CO_2$ and $0.126 \ g$ of $H_2O$ on complete combustion. If the $\%$ of carbon is $24$,then the $\%$ of hydrogen is $...... \times 10^{-1}$. $(Nearest \ integer)$

In the quantitative estimation of sulfur in an organic compound,the amount of sulfur is determined in the form of which substance?

In the Kjeldahl's method for estimation of nitrogen present in a soil sample,ammonia evolved from $0.75 \ g$ of sample neutralized $10 \ mL$ of $1 \ M \ H_2SO_4$. The percentage of nitrogen in the soil is (in $.33$)

In the sulphur estimation,$0.20 \ g$ of a pure organic compound gave $0.40 \ g$ of barium sulphate. The percentage of sulphur in the compound is $.......... \times 10^{-1} \%$. $(Molar \ mass : O=16, S=32, Ba=137 \ g \ mol^{-1})$

$A$ sample of $0.125 \ g$ of an organic compound when analysed by Duma's method yields $22.78 \ mL$ of nitrogen gas collected over $KOH$ solution at $280 \ K$ and $759 \ mm \ Hg$. The percentage of nitrogen in the given organic compound is (Nearest integer).
$(a)$ The vapour pressure of water at $280 \ K$ is $14.2 \ mm \ Hg$
$(b)$ $R = 0.082 \ L \ atm \ K^{-1} \ mol^{-1}$

In Carius method for estimation of halogens,$0.2 \, g$ of an organic compound gave $0.188 \, g$ of $AgBr$. The percentage of bromine in the compound is $......$ . (Nearest integer)
[Atomic mass: $Ag=108, Br=80$ ]