The dipole moment order of which of the following pairs of molecules is $NOT$ correct?

If $m$ and $n$ are respectively the order and degree of the differential equation of the family of parabolas with origin as its focus and $X$-axis as its axis, then $mn-m+n=$

$A$ transition metal $M$ forms a volatile chloride with a vapor density of $94.8$. If it contains $74.75\%$ chlorine,what is the formula of the metal chloride?

The experimentally determined molar mass of a non-volatile solute,$BaCl_2$,in water by Cottrell's method,is

If $f:[2,3] \rightarrow R$ is defined by $f(x)=x^3+3x-2$, then the range of $f(x)$ is contained in the interval

In which of the following reactions,$H_2O_2$ acts as a reducing reagent?