For preparing one litre $N/10$ solution of $H_2SO_4$,we need $H_2SO_4$.......$g$.

At $STP$,'$x$' $g$ of a metal hydrogen carbonate $(MHCO_3)$ (molar mass $84 \ g \ mol^{-1}$) on heating gives $CO_2$,which can completely react with $0.2 \ mol$ of $MOH$ (molar mass $40 \ g \ mol^{-1}$) to give $MHCO_3$. The value of '$x$' is

Equal masses of methane and oxygen are mixed in an empty container at $25^\circ C$. The fraction of the total pressure exerted by oxygen is

$5 \, mL$ of $N$ $HCl$,$20 \, mL$ of $N/2$ $H_2SO_4$,and $30 \, mL$ of $N/3$ $HNO_3$ are mixed together and the volume is made up to $1 \, L$. The normality of the resulting solution is:

$16.8 \ L$ of a gas mixture containing $H_2$ and $O_2$ is formed at $NTP$ by the electrolysis of water. What is the mass of the electrolysed water in $g$?

In the Victor Meyer method,$0.2 \ g$ of a volatile substance displaces $56 \ mL$ of air at $STP$. The molar mass of the substance is: