Arrange the following acids in the decreasing order of their acidic strength: $Cl(OH) \ (I)$,$Br(OH) \ (II)$,$I(OH) \ (III)$.

$Fe x_2$ and $Fe y_3$ are known when $x$ and $y$ are :

Observe the following oxides. The number of amphoteric oxides from the given list is
$CO, B_2O_3, SnO_2, PbO_2, Ga_2O_3, SnO, PbO, CO_2$

Choose the correct order of acidic strength for $CO_2, CuO, CaO, H_2O$.

Which group of the periodic table contains only metals?

Given below are two statements:
Statement $I$ : Both metal and non-metal exist in $p$ and $d-$block elements.
Statement $II$ : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
In the light of the above statements,choose the most appropriate answer from the option given below: