Washing soda is manufactured by:

 

The crimson colour imparted to flame is due to a salt of:

Consider the following statements:
${\mathrm{S}}_1$ : Beryllium and Magnesium are inert to oxygen and water.

${\mathrm{S}}_2:$ Concentrated solutions of alkaline earth metals in ammonia are bronze coloured.

${\mathrm{S}}_3:$ Calcium, strontium and barium reacts with cold water forming hydroxides and liberating hydrogen gas.
${\mathrm{S}}_4:$ Oxides and hydroxides of alkaline earth metals are more ionic and more basic than that of the alkali metals. 

and arrange in the order of true/false.