Hydrazine reacts with $KIO_3$ in the presence of $HCl$ as:
$N_2H_4 + IO_3^- + 2H^+ + Cl^- \rightarrow ICl + N_2 + 3H_2O$
The equivalent masses of $N_2H_4$ and $KIO_3$ respectively are:

Suppose two elements $X$ and $Y$ combine to form two compounds $XY_{2}$ and $X_{2}Y_{3}$. If $0.05 \ mol$ of $XY_{2}$ weighs $5 \ g$ while $3.011 \times 10^{23}$ molecules of $X_{2}Y_{3}$ weighs $85 \ g$,then atomic masses of $X$ and $Y$ are respectively :

Oxygen consists of $O^{16}, O^{17}$ and $O^{18}$ isotopes and carbon consists of isotopes of $C^{12}$ and $C^{13}$. Total number of $CO_2$ molecules possible are

The modern atomic weight scale is based on

The equivalent weight of $H_3PO_4$ in the reaction $Ca(OH)_2 + H_3PO_4 \rightarrow CaHPO_4 + 2H_2O$ is

The approximate mass of a tritium oxide molecule is $............$ $amu$.