Which of the following is the strongest reducing agent in an aqueous medium?

Among the carbonates of alkali metals,which one has the highest thermal stability?

Identify the correct statements from the following:
$A$) Among alkali metal ions,$Li^+$ has the highest hydration enthalpy.
$B$) The boiling point of alkali metals increases from $Li$ to $Cs$.
$C$) The density of $K$ is less than that of $Na$ and $Rb$.
$D$) $Li$ has a strong tendency to form superoxide.

Which alkali metal emits blue colour light in a flame test?

Which of the following is called white vitriol?

Which of the following is Potash Alum?