Equal weights of $CH_{4}$ and $H_{2}$ are mixed in an empty container at $25^{\circ} C$. The fraction of the total pressure exerted by $H_{2}$ is

The more commonly used baking powder contains about $30\%$ $NaHCO_3$,$20\%$ $NaAl(SO_4)_2$,$10\%$ $Ca(H_2PO_4)_2$ and $40\%$ starch. Which of the following statements is/are correct?

Hydrochloric acid solutions $A$ and $B$ have concentrations of $0.5 \ N$ and $0.1 \ N$ respectively. The volumes of solutions $A$ and $B$ required to make $2 \ L$ of $0.2 \ N$ $HCl$ are:

Mohr's salt is

The total mass of a mixture containing $5.6 \ L$ of $H_2O$ and $1 \ g$ atom of $Zn$ is ............... $g$ $[H = 1, O = 16, Zn = 65.5]$

The incorrect postulates of the Dalton's atomic theory are :
$A$. Atoms of different elements differ in mass.
$B$. Matter consists of divisible atoms.
$C$. Compounds are formed when atoms of different element combine in a fixed ratio.
$D$. All the atoms of given element have different properties including mass.
$E$. Chemical reactions involve reorganisation of atoms.
Choose the correct answer from the options given below :