What is the equivalent weight of $SnCl_{2}$ in the following reaction: $SnCl_{2} + Cl_{2} \longrightarrow SnCl_{4}$?

Assign $A, B, C, D$ from the given type of reaction: $C_{(s)} + O_{2(g)} \xrightarrow{\Delta} CO_2 \uparrow$

In the reaction of sodium thiosulphate with $I_2$ in aqueous medium,the equivalent weight of sodium thiosulphate is equal to:

In the following balanced reaction,
$X\,MnO_4^- + Y\,C_2O_4^{2-} + Z\,H^+ \rightleftharpoons X\,Mn^{2+} + 2Y\,CO_2 + \frac{Z}{2}\,H_2O$
values of $X, Y$ and $Z$ respectively are

Assign $A, B, C, D$ from the given type of reaction.
$3Mg_{(s)} + N_{2(g)} \longrightarrow Mg_3N_{2(s)}$

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Ca_{(s)} + 2H_2O_{(l)} \xrightarrow{R.T.} Ca(OH)_{2(aq)} + H_{2(g)} \uparrow$