Which method uses an instrument called a nitrometer?

What are the formulas,names,and molecular masses of the compounds obtained during the estimation of phosphorus in organic compounds?

Which compounds are taken in the Kjeldahl's flask for the estimation of nitrogen?

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

Column-$I$	Column-$II$
$(i)$. Estimation of carbon and hydrogen	$(p)$. $AgX$
$(ii)$. Estimation of nitrogen	$(q)$. $CO_2$ and $H_2O$
$(iii)$. Estimation of halogen	$(r)$. $N_2$
$(iv)$. Estimation of sulphur	$(s)$. $Mg_2P_2O_7$
$(v)$. Estimation of phosphorus	$(t)$. $BaSO_4$

What is $CHN$ analysis in organic estimation?

In an estimation of bromine by Carius method,$1.6 \ g$ of an organic compound gave $1.88 \ g$ of $AgBr$. The mass percentage of bromine in the compound is..........
(Atomic mass,$Ag = 108, Br = 80 \ g \ mol^{-1}$)