'Bordeaux mixture' is used as a fungicide. It is a mixture of

Match the following:

List-$I$ (Chemical)	List-$II$ (Use)
$A$. $KOH$	$I$. Coolant
$B$. $Na_{(l)}$	$II$. Antacid
$C$. $Li$	$III$. Electrochemical Cells
$D$. $Mg(OH)_2$	$IV$. Absorbent for $CO_2$

The correct answer is:

Present a comparative account of the alkali and alkaline earth metals with respect to the following characteristics :
$(a)$ Tendency to form ionic/covalent compounds.
$(b)$ Nature of oxides and their solubility in water.
$(c)$ Formation of oxosalts.
$(d)$ Solubility of oxosalts.
$(e)$ Thermal stability of oxosalts.

Soda lime is made from

Which of the following pairs of atomic numbers represents elements belonging to the $s$-block?

Which orders are correct?
$(I)$ Thermal stability: $BeSO_4 < MgSO_4 < CaSO_4 < SrSO_4$
$(II)$ Basic nature: $CaO > MgO > BeO > ZnO$
$(III)$ Solubility in water: $LiOH < NaOH < KOH < RbOH$
$(IV)$ Melting point: $NaCl > KCl > RbCl > CsCl > LiCl$