$0.5 \ M$ of $H_2SO_4$ is diluted from $1 \ L$ to $10 \ L$,the normality of the resulting solution is ......... $N$.

The molecular weight of a gas is $45$. Its density at $STP$ is

How many moles of $KCl$ are dissolved in $1000 \ mL$ of $3 \ M$ $KCl$ solution?

Equal masses of methane $(CH_4)$ and oxygen $(O_2)$ are mixed in an empty container at $25\,^oC$. The fraction of the total pressure exerted by oxygen is:

What is the amount of water formed by combustion of $1.6 \ g$ methane (in $g$)?

One mole of fluorine is reacted with two moles of hot concentrated $KOH$. The products formed are $KF, H_2O$ and $O_2$. The molar ratio of $KF, H_2O$ and $O_2$,respectively is