Baking soda is

Which of the following statements is correct regarding alkali metals?

What is the product of the reaction between aluminium and aqueous $NaOH$?

$CO_2 + NH_3 + H_2O \to X$
$X + NaCl \to Y + NH_4Cl$
$2Y \xrightarrow{\Delta} Z + H_2O + CO_2$. '$Z$' is

Match the elements given in Column-$I$ with the colour they impart to the flame given in Column-$II$.

Column-$I$	Column-$II$
$A$. $Cs$	$1$. Apple green
$B$. $Na$	$2$. Violet
$C$. $K$	$3$. Brick red
$D$. $Ca$	$4$. Yellow
$E$. $Sr$	$5$. Crimson red
$F$. $Ba$	$6$. Blue

Which of the following statements are correct for alkali metal compounds?
$(i)$ Superoxides are paramagnetic in nature.
(ii) The basic strengths of hydroxides increase down the group.
(iii) The conductivity of chlorides in their aqueous solutions decreases down the group.
(iv) The basic nature of carbonates in aqueous solutions is due to cationic hydrolysis.