Hydrated sodium aluminium silicate is called

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Slaked lime	$I$. $NaOH$
$B$. Dead burnt plaster	$II$. $Ca(OH)_2$
$C$. Caustic soda	$III$. $Na_2CO_3 \cdot 10H_2O$
$D$. Washing soda	$IV$. $CaSO_4$

Choose the correct answer from the options given below:

How is $NaCl$ prepared from brine (sea water)?

Lead pipes are not used for carrying drinking water because:

The correct order of electrical conductivity of alkali metal ions in their aqueous solution for $Cs^{+}$,$K^{+}$,$Na^{+}$,and $Li^{+}$ is:

Which among the following alkali metal chlorides crystallises in the form of a hydrate?